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Efficacy and Safety Study of Apixaban for the Treatment of Deep Vein Thrombosis or Pulmonary Embolism

A Safety and Efficacy Trial Evaluating the Use of Apixaban in the Treatment of Symptomatic Deep Vein Thrombosis and Pulmonary Embolism

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00643201
Enrollment
5614
Registered
2008-03-26
Start date
2008-07-31
Completion date
2013-03-31
Last updated
2014-04-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Venous Thrombosis

Brief summary

The purpose of this study is to evaluate the effects of an investigational blood thinner, apixaban, in preventing venous thromboembolic (VTE) recurrence or death in patients with deep vein thrombosis (DVT) or pulmonary embolism (PE)

Interventions

DRUGEnoxaparin

solution, subcutaneous, 1 mg/kg Q12h until International normalized ratio (INR) ≥2.

DRUGwarfarin

tablets, oral, dosing to target INR range between 2.0 - 3.0, once daily, 6 months

DRUGPlacebo for apixaban

tablets, oral, 10 mg tablets, twice daily, for 7 days followed by placebo for apixaban 5 mg tablets, twice daily, 6 months

DRUGPlacebo for enoxaparin

solution, subcutaneous, 1 mg/kg Q12h until sham INR ≥2.

DRUGPlacebo for warfarin

tablets, oral, dosing to target sham INR range between 2.0 - 3.0, once daily, 6 months

DRUGapixaban

tablets, oral, 10 mg tablets, twice daily, for 7 days followed by apixaban 5 mg, twice daily, 6 months

Sponsors

Pfizer
CollaboratorINDUSTRY
Bristol-Myers Squibb
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Men and women ≥ 18 years of age * Clinical diagnosis of DVT or PE

Exclusion criteria

* Contraindications for enoxaparin or warfarin * Active bleeding or high risk for serious bleeding * Short life expectancy * Uncontrolled high blood pressure * Significantly impaired kidney or liver function

Design outcomes

Primary

MeasureTime frameDescription
Incidence of Adjudicated Composite of Symptomatic, Recurrent Venous Thromboembolism (VTE) or VTE-Related Death During 6 Months of TreatmentDay 1 to Week 24 + 2 Days or 355 days (Discontinued Early)VTE: nonfatal deep vein thrombosis (DVT) or nonfatal pulmonary embolism (PE). All events were adjudicated by an ICAC blinded to treatment. DVT assessed by compression ultrasound and/or venography; PE assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Event rate (proportion of participants): n/N (n=number of participants with observation; N=total number of efficacy evaluable participants). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Composite endpoint: events at any time from randomization until end of intended treatment, regardless whether drug treatment was received. All randomized participants with a non-missing primary endpoint were summarized. Missing endpoint = outcomes which could not be documented on or after study Day 154. Participants were categorized to the assigned group regardless of the treatment actually received (intent-to-treat).

Secondary

MeasureTime frameDescription
Incidence of Adjudicated Symptomatic Nonfatal Pulmonary Embolism (PE) During the Intended Treatment PeriodDay 1 to Week 24 + + 2 Days or 355 Days (Discontinued Early)PE adjudicated by an ICAC blinded to treatment. PE: spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Includes events that occurred during the intended treatment period, regardless of whether the participant received study medication (ITT principle). Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants, excluding those with missing endpoint). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early).
Incidence of Adjudicated Composite of Recurrent Symptomatic VTE or Cardiovascular (CV)-Related DeathDay 1 up to 24 Weeks + 2 Days or 355 Days (Discontinued Early)VTE included: nonfatal DVT or nonfatal PE. All events were adjudicated by an ICAC blinded to treatment. DVT was assessed by compression ultrasound and/or venography; PE was assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Event rate (proportion of participants with event) calculated as n/N (n=number of participants with observation; N=total number of efficacy evaluable participants, participants with missing endpoint information excluded). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Composite endpoint included events at any time from randomization until end of the intended treatment period, regardless whether drug treatment was received, ie, ITT principle. Each participant scored as having an event only if the participant experienced one or more of the elements of the composite.
Incidence of Adjudicated Composite of Recurrent Symptomatic VTE or VTE-related Death or Major BleedingDay 1 up to 24 Weeks + 2 Days or 355 Days (Discontinued Early)VTE included: nonfatal DVT or nonfatal PE. All events were adjudicated by an ICAC blinded to treatment. DVT assessed by compression ultrasound and/or venography; PE assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Major bleeding defined by International Society on Thrombosis and Haemostasis: acute, clinically overt bleeding associated with decrease in hemoglobin (Hgb) of 2 g/dL or more or bleeding leading to transfusion or bleeding in a critical site or bleeding that is fatal . Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants, excluding those with missing endpoint and including those not in the efficacy evaluable population with a bleeding event that occurred during treatment period. Events included regardless of whether or not participant received treatment, ie, ITT principle
Incidence of Adjudicated Composite of Recurrent Symptomatic VTE, Myocardial Infarction, Stroke, CV-related Death, Clinically Relevant Non-major (CRNM) Bleeding or Major BleedingDay 1 up to 24 Weeks + 2 Days or 355 Days (Discontinued Early)VTE=Nonfatal DVT or nonfatal PE adjudicated by ICAC blinded to treatment. DVT: compression ultrasound and/or venography; PE: spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Major Bleeding = acute, clinically overt bleeding: decrease in Hgb of 2 g/dL or more or bleeding leading to transfusion or bleeding in a critical site or fatal bleeding. CRNM = acute clinically overt bleeding: compromising hemodynamics, leading to hospitalization, hematoma, epistasis \>5 minutes or repetitive, gingival bleeding, hematuria, macroscopic gastrointestinal hemorrhage, rectal blood loss, hemoptysis. n/N (n=number of participants with observation; N=Total number of participants, excluding those with missing endpoint and including those not in the efficacy evaluable population with a bleeding event that occurred during treatment period). Events included regardless of whether or not treatment was received (ITT).
Incidence of Adjudicated Symptomatic Nonfatal Deep Vein Thrombosis (DVT) During the Intended Treatment PeriodDay 1 up to 24 Weeks + 2 Days or 355 Days (Discontinued Early)DVT adjudicated by an ICAC blinded to treatment. DVT evaluated by: compression ultrasound and/or venography. Includes events that occurred during the intended treatment period, regardless of whether the participant received study medication, intent to treat principle (ITT). Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants, excluding those with missing endpoint). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early).
Incidence of Adjudicated Venous Thromboembolism (VTE)-Related Death During the Intended Treatment PeriodDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)VTE-related death included: DVT-related death or PE-related death. All events were adjudicated by an ICAC blinded to treatment. DVT was assessed by compression ultrasound and/or venography; PE was assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Event rate (proportion of participants with event) calculated as n/N (n=number of participants with observation; N=total number of participants in respective treatment groups excluding participants with missing endpoint information). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Includes events that occur during the intended treatment period regardless of whether or not the participant received study medication (ITT principle).
Incidence of Cardiovascular (CV)-Related Death Including VTE-related Death During the Intended Treatment PeriodDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)VTE-related death included: DVT-related death or PE-related death. All events were adjudicated by an ICAC blinded to treatment. DVT assessed by compression ultrasound and/or venography; PE assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Event rate (proportion of participants with event) calculated as n/N (n=number of participants with observation; N=total number of participants in respective treatment groups excluding participants with missing endpoint information). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Includes events that occur during the intended treatment period regardless of whether or not the participant received study medication (ITT principle).
Incidence of All-Cause Death During the Intended Treatment PeriodDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Includes events that occurred during the intended treatment period, regardless of whether the participant received study medication (ITT principle). Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants, excluding those with missing endpoint information).
Incidence of Adjudicated Major Bleeding During the Treatment Period in Treated ParticipantsDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)All events were adjudicated by an ICAC blinded to treatment. Bleeding defined by International Society on Thrombosis and Haemostasis: Major Bleeding: acute, clinically overt bleeding: decrease in hemoglobin (hgb) of 2 g/dL or more or bleeding leading to transfusion or bleeding in a critical site or fatal bleeding. Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants in respective treatment group (all participants who received at least one dose of study drug). Participants were categorized to the treatment group to which they were assigned unless incorrect study treatment was received throughout the study, in which case the participant was categorized according to the treatment received.
Incidence of Adjudicated Composite of Recurrent Symptomatic Venous Thromboembolism (VTE) or All-Cause DeathDay 1 up to 24 Weeks + 2 Days or 355 Days (Discontinued Early)VTE included: nonfatal DVT or nonfatal PE. All events were adjudicated by an ICAC blinded to treatment. DVT was assessed by compression ultrasound and/or venography; PE was assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Event rate (proportion of participants with event) calculated as n/N (n=number of participants with observation; N=total number of efficacy evaluable participants). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Composite endpoint included events at any time from randomization until end of the intended treatment period, regardless whether drug treatment was received, ie intent to treat (ITT) principle. Each participant scored as having an event only if they experienced one or more of the elements of the composite. Participants with missing endpoint information excluded.
Incidence of Adjudicated Clinically Relevant Non Major (CRNM) Bleeding During the Treatment Period in Treated ParticipantsDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)Bleeding defined by International Society on Thrombosis and Haemostasis: CRNM defined as acute clinically overt bleeding: compromising hemodynamics, leading to hospitalization, hematoma, epistasis \>5 minutes or repetitive, gingival bleeding, hematuria, macroscopic gastrointestinal hemorrhage, rectal blood loss, hemoptysis. All events were adjudicated by an ICAC blinded to treatment. Event rate (proportion of participants with event): calculated as n/N (n=number of participants with observation; N=Total number of participants in respective treatment group (all participants who received at least one dose of study drug). Participants were categorized to the treatment group to which they were assigned unless incorrect study treatment was received throughout the study, in which case the participant was categorized according to the treatment received.
Incidence of Adjudicated Minor Bleeding During the Treatment Period in Treated ParticipantsDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)Bleeding defined by International Society on Thrombosis and Haemostasis: Minor bleeding: all acute clinically overt bleeding events not meeting the criteria for either major bleeding or CRNM. All events wre adjudicated by an ICAC blinded to treatment. Event rate (proportion of participants) calculated as n/N (n=number of participants with observation; N=Total number of participants in respective treatment group (all participants who received at least one dose of study drug). Participants were categorized to the treatment group to which they were assigned unless incorrect study treatment was received throughout the study, in which case the participant was categorized according to the treatment received.
Incidence of Adjudicated Total Bleeding During the Treatment Period in Treated ParticipantsDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)Bleeding defined by International Society on Thrombosis and Haemostasis: Total Bleeding defined as any of major, CRNM, or minor bleeding. All events were adjudicated by an ICAC blinded to treatment. Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants in respective treatment group (all participants who received at least one dose of study drug). Participants were categorized to the treatment group to which they were assigned unless incorrect study treatment was received throughout the study, in which case the participant was categorized according to the treatment received.
Number of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsFirst dose to last dose of 24 Weeks + 2 days (AEs) or + 30 days (SAEs) or until drug discontinuedTreated Participants: all who received at least 1 dose of study drug. Participants categorized to the treatment group to which they were assigned unless incorrect study treatment was received throughout the study, in which case the participant was categorized according to treatment received. Included all SAEs and AEs with onset from first dose to last dose + 2 days (for AEs) or + 30 days (for SAEs); note; bleeding AEs and SAEs from first dose to last dose + 2 days included. Discontinuations due to AE included all AEs/SAEs from first dose until drug was discontinued. AE=any new unfavorable symptom, sign, or disease or worsening of a preexisting condition that may not have a causal relationship with treatment. SAE=a medical event that at any dose results in death, persistent or significant disability/incapacity, or drug dependency/abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization.
Number of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)Lower limit of normal (LLN). Upper limit of normal (ULN). Pre-therapy (PreRx). Absolute (Abs) neutrophil count, bands + neutrophils (ANC). Cells per microliter (c/µL). Grams per deciliter (g/dL). Cells per Liter (c/L). Millimeter (MM). White blood cells: \< 0.75\*LLN, \> 1.25\*ULN; Hemoglobin: \<= 11.5 g/dL (males), \<= 9.5 g/dL (females); Hematocrit: \<= 37% (males), \<= 32% (females); Erythrocytes: \<0.75\*10\^6 c/µL\*PreRx; Platelet count: \< 75\*10\^9 c/L, \> 700\*10\^9 c/L; ANC: \< 1.00\*10\^3 c/µL; Abs eosinophils: \> 0.750\*10\^3 c/µL; Abs Basophils: \> 400/MM\^3; Abs Monocytes\> 2000/MM\^3; Abs Lymphocytes: \< 0.750\*10\*3 c/ µL, \> 7.5\*10\^3 c/ µL.
Number of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)Bicarbonate milliequivalents/Liter (mEq/L) Low/High: \< 0.75\*LLN or \> 1.25\*ULN, or if pre-dose \< LLN then use \< 0.75\*pre-dose or \> ULN if pre-dose \> ULN then use \> 1.25\*pre-dose or \< LLN; Serum Calcium mg/dL Low/High: \< 0.8\*LLN or \> 1.2\*ULN, or if pre-dose \< LLN then use \< 0.75\*pre-dose or \> ULN if pre-dose \> ULN then use \> 1.25\*pre-dose or \< LLN; Serum Chloride mEq/L: \< 0.9\*LLN or \> 1.1\*ULN, or if pre-dose \< LLN then use \< 0.9\*pre-dose or \> ULN if pre-dose \> ULN then use \> 1.1\*pre-dose or \< LLN; Serum Potassium mEq/L: \< 0.9\*LLN or \> 1.1\*ULN, or if pre-dose \< LLN then use \< 0.9\*pre-dose or \> ULN if pre-dose \> ULN then use \> 1.1\*pre-dose or \< LLN; Serum Sodium mEq/L: \< 0.95\*LLN or \> 1.05\*ULN, or if pre-dose \< LLN then use \< 0.95\*pre-dose or \> ULN if pre-dose \> ULN then use \> 1.05\*pre-dose or \< LLN.
Number of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)Blood urea nitrogen (BUN), milligrams/deciliter (mg/dL), units per liter (U/L). BUN mg/dL High: \> 1.5\*ULN; Creatinine mg/dL: \> 1.5\*ULN; Alanine aminotransferase (ALT) U/L: \> 3\*ULN; Aspartate aminotransferase (AST) U/L: \> 3\*ULN; Alkaline phosphatase U/L: \> 2\*ULN; Bilirubin Direct mg/dL: \> 1.5\*ULN; Bilirubin Total mg/dL: \> 2\*ULN.
Number of Treated Participants With Marked Abnormalities in Creatine Kinase, Uric Acid, and Total Protein Laboratory TestsDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)Creatine kinase High: \>5\*ULN Units/Liter (U/L); Total Protein High/Low: \< 0.9 \*LLN or \> 1.1\*ULN, or if pre-dose \< LLN then use 0.9\* pre-dose or \> ULN if pre-dose \> ULN then use 1.1 \*pre-dose or \<LLN; Uric acid High: \> 1.5\* ULN, or if pre-dose \> ULN then use \> 2 \*pre-dose.
Number of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)All tests in urine: Glucose: If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4; Protein: If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4; Blood: If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4; Leukocyte esterase: If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4;Red blood cells (RBC): If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4; White blood cells (WBC): If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4.
Incidence of Adjudicated Major/CRNM Bleeding During the Treatment Period in Treated ParticipantsDay 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)Major Bleeding = acute, clinically overt bleeding: decrease in hemoglobin of 2 g/dL or more, or bleeding leading to transfusion, or bleeding in a critical site, or fatal bleeding. CRNM = acute clinically overt bleeding: compromising hemodynamics, leading to hospitalization, hematoma, epistasis \>5 minutes or repetitive, gingival bleeding, hematuria, macroscopic gastrointestinal hemorrhage, rectal blood loss, hemoptysis. Minor =: All acute clinically overt bleeding events not meeting the criteria for either major bleeding or CRNM. All events were adjudicated by an ICAC blinded to treatment. Total bleeding = any of major, or CRNM, or minor bleeding. Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of treated (received at least 1 dose of study drug).

Countries

Argentina, Australia, Austria, Brazil, Canada, Chile, China, Czechia, Denmark, France, Germany, Hong Kong, Hungary, India, Israel, Italy, Malaysia, Mexico, Norway, Poland, Portugal, Puerto Rico, Romania, Russia, Singapore, South Africa, South Korea, Spain, Ukraine, United Kingdom, United States

Participant flow

Recruitment details

First participant, first visit: 27 August 2008; Last participant, last visit: 12 March 2013.

Pre-assignment details

5614 enrolled, 5395 randomized; Reasons for non-randomization: 173 did not meet inclusion/exclusion criteria; 12 withdrew consent; 5 had clinical reason to continue current treatment; 3 administrative reason by sponsor; 1 death; 1 adverse event (AE); 24 other reasons. 1 site (5 patients) excluded from analysis due to unconfirmed accuracy of data.

Participants by arm

ArmCount
Apixaban
apixaban: tablets, oral, 10 milligram (mg) tablets, twice daily, for 7 days followed by apixaban 5 mg, twice daily, 6 months. Placebo for enoxaparin: solution, subcutaneous, 1milligram per kilogram (mg/kg) every 12 hours until sham International normalized ratio (INR) greater than, equal to ( ≥) 2. Placebo for warfarin: tablets, oral, dosing to target sham INR range between 2.0 - 3.0, once daily, 6 months
2,691
Enoxaparin + Warfarin
Enoxaparin: solution, subcutaneous, 1 mg/kg Q12h until INR ≥2. warfarin: tablets, oral, dosing to target INR range between 2.0 - 3.0, once daily, 6 months Placebo for apixaban: tablets, oral, 10 mg tablets, twice daily, for 7 days followed by placebo for apixaban 5 mg tablets, twice daily, 6 months
2,704
Total5,395

Withdrawals & dropouts

PeriodReasonFG000FG001
Completed Study Follow UpDeath2834
Completed Study Follow UpLost to Follow-up1816
Completed Study Follow Upnon-specified10
Completed Study Follow UpWithdrawal by Subject2329
Randomized, Completed 6 Months of StudyAdministrative reason11
Randomized, Completed 6 Months of StudyAdverse Event150182
Randomized, Completed 6 Months of StudyDeath2026
Randomized, Completed 6 Months of StudyFails to meet inclusion/exclusion139
Randomized, Completed 6 Months of StudyLost to Follow-up1414
Randomized, Completed 6 Months of StudyOther107107
Randomized, Completed 6 Months of StudyPoor or non-compliance2023
Randomized, Completed 6 Months of StudyPregnancy32
Randomized, Completed 6 Months of StudyWithdrawal by Subject4949

Baseline characteristics

CharacteristicApixabanEnoxaparin + WarfarinTotal
Age, Continuous57.2 years
STANDARD_DEVIATION 15.98
56.7 years
STANDARD_DEVIATION 16.01
56.9 years
STANDARD_DEVIATION 16
Age, Customized
65 to < 75
560 participants570 participants1130 participants
Age, Customized
Greater than, equal to (>=) 75
402 participants372 participants774 participants
Age, Customized
Less than (<) 65
1729 participants1762 participants3491 participants
Index Event Classification
Adjudicated PE
930 participants906 participants1836 participants
Index Event Classification
Adjudicated Proximal DVT
1749 participants1783 participants3532 participants
Index Event Classification
PE
913 participants890 participants1803 participants
Index Event Classification
Proximal DVT
1778 participants1814 participants3592 participants
Qualifying index Venous Thromboembolic Embolism
Not Reported
3 participants3 participants6 participants
Qualifying index Venous Thromboembolic Embolism
Provoked Index VTE
272 participants272 participants544 participants
Qualifying index Venous Thromboembolic Embolism
Unprovoked Index VTE
2416 participants2429 participants4845 participants
Race/Ethnicity, Customized
American Indian or Alaska Native
6 participants2 participants8 participants
Race/Ethnicity, Customized
Asian
227 participants226 participants453 participants
Race/Ethnicity, Customized
Black or African American
106 participants98 participants204 participants
Race/Ethnicity, Customized
Ethnicity Not Reported
2304 participants2306 participants4610 participants
Race/Ethnicity, Customized
Hispanic or Latino
20 participants18 participants38 participants
Race/Ethnicity, Customized
Not Hispanic or Latino
367 participants380 participants747 participants
Race/Ethnicity, Customized
Other Race
89 participants85 participants174 participants
Race/Ethnicity, Customized
Race Not Reported
45 participants50 participants95 participants
Race/Ethnicity, Customized
White
2218 participants2243 participants4461 participants
Region of Enrollment
Argentina
17 participants16 participants33 participants
Region of Enrollment
Australia
56 participants64 participants120 participants
Region of Enrollment
Austria
40 participants39 participants79 participants
Region of Enrollment
Brazil
77 participants81 participants158 participants
Region of Enrollment
Canada
147 participants152 participants299 participants
Region of Enrollment
China
113 participants114 participants227 participants
Region of Enrollment
Czech Republic
140 participants134 participants274 participants
Region of Enrollment
Denmark
69 participants72 participants141 participants
Region of Enrollment
France
140 participants149 participants289 participants
Region of Enrollment
Germany
202 participants205 participants407 participants
Region of Enrollment
Hong Kong
2 participants1 participants3 participants
Region of Enrollment
Hungary
145 participants128 participants273 participants
Region of Enrollment
India
101 participants99 participants200 participants
Region of Enrollment
Israel
162 participants163 participants325 participants
Region of Enrollment
Italy
167 participants169 participants336 participants
Region of Enrollment
Korea, Republic of
2 participants2 participants4 participants
Region of Enrollment
Malaysia
0 participants2 participants2 participants
Region of Enrollment
Mexico
59 participants57 participants116 participants
Region of Enrollment
Norway
40 participants32 participants72 participants
Region of Enrollment
Poland
60 participants59 participants119 participants
Region of Enrollment
Portugal
10 participants9 participants19 participants
Region of Enrollment
Romania
33 participants41 participants74 participants
Region of Enrollment
Russian Federation
178 participants174 participants352 participants
Region of Enrollment
Singapore
5 participants5 participants10 participants
Region of Enrollment
South Africa
70 participants77 participants147 participants
Region of Enrollment
Spain
56 participants51 participants107 participants
Region of Enrollment
Ukraine
213 participants211 participants424 participants
Region of Enrollment
United States
387 participants398 participants785 participants
Sex: Female, Male
Female
1122 Participants1106 Participants2228 Participants
Sex: Female, Male
Male
1569 Participants1598 Participants3167 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
1,014 / 2,6761,207 / 2,689
serious
Total, serious adverse events
417 / 2,676410 / 2,689

Outcome results

Primary

Incidence of Adjudicated Composite of Symptomatic, Recurrent Venous Thromboembolism (VTE) or VTE-Related Death During 6 Months of Treatment

VTE: nonfatal deep vein thrombosis (DVT) or nonfatal pulmonary embolism (PE). All events were adjudicated by an ICAC blinded to treatment. DVT assessed by compression ultrasound and/or venography; PE assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Event rate (proportion of participants): n/N (n=number of participants with observation; N=total number of efficacy evaluable participants). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Composite endpoint: events at any time from randomization until end of intended treatment, regardless whether drug treatment was received. All randomized participants with a non-missing primary endpoint were summarized. Missing endpoint = outcomes which could not be documented on or after study Day 154. Participants were categorized to the assigned group regardless of the treatment actually received (intent-to-treat).

Time frame: Day 1 to Week 24 + 2 Days or 355 days (Discontinued Early)

Population: All randomized participants with a non-missing primary endpoint (n/N: 59/2609; 71/2635, in apixaban, enoxaparin/warfarin, respectively). Intent-to-treat population. Confidence interval (CI) for event rate calculated based on the Wald asymptotic confidence limits.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Composite of Symptomatic, Recurrent Venous Thromboembolism (VTE) or VTE-Related Death During 6 Months of Treatment0.0226 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Composite of Symptomatic, Recurrent Venous Thromboembolism (VTE) or VTE-Related Death During 6 Months of Treatment0.0269 proportion of participants
Comparison: Hypothesis that apixaban was non-inferior to enoxaparin/warfarin therapy in preventing the recurrence of VTE (nonfatal DVT or nonfatal PE)/VTE-related death.p-value: <0.000195% CI: [0.5965, 1.1802]Yanagawa-Tango-Hiejima
Comparison: Hypothesis that apixaban was non-inferior to enoxaparin/warfarin therapy in preventing the recurrence of VTE (nonfatal DVT or nonfatalPE)/VTE-related death as measured by risk difference.p-value: <0.000195% CI: [-0.0128, 0.004]Yanagawa-Tango-Hiejima
Comparison: Hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint. Inferential testing required demonstration of non-inferiority using both RR and RD plus demonstration of superiority for major bleeding.p-value: 0.312895% CI: [0.5965, 1.1802]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Clinically Relevant Non Major (CRNM) Bleeding During the Treatment Period in Treated Participants

Bleeding defined by International Society on Thrombosis and Haemostasis: CRNM defined as acute clinically overt bleeding: compromising hemodynamics, leading to hospitalization, hematoma, epistasis \>5 minutes or repetitive, gingival bleeding, hematuria, macroscopic gastrointestinal hemorrhage, rectal blood loss, hemoptysis. All events were adjudicated by an ICAC blinded to treatment. Event rate (proportion of participants with event): calculated as n/N (n=number of participants with observation; N=Total number of participants in respective treatment group (all participants who received at least one dose of study drug). Participants were categorized to the treatment group to which they were assigned unless incorrect study treatment was received throughout the study, in which case the participant was categorized according to the treatment received.

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants receiving at least one dose of study drug n/N: 103/2676; 215/2689, in apixaban and enoxaparin/warfarin groups, respectively. CI for event rate calculated based on Wald asymptotic confidence limits. Participants were categorized according to the actual treatment received.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Clinically Relevant Non Major (CRNM) Bleeding During the Treatment Period in Treated Participants0.0385 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Clinically Relevant Non Major (CRNM) Bleeding During the Treatment Period in Treated Participants0.0800 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.p-value: <0.000195% CI: [0.3815, 0.6022]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Composite of Recurrent Symptomatic Venous Thromboembolism (VTE) or All-Cause Death

VTE included: nonfatal DVT or nonfatal PE. All events were adjudicated by an ICAC blinded to treatment. DVT was assessed by compression ultrasound and/or venography; PE was assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Event rate (proportion of participants with event) calculated as n/N (n=number of participants with observation; N=total number of efficacy evaluable participants). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Composite endpoint included events at any time from randomization until end of the intended treatment period, regardless whether drug treatment was received, ie intent to treat (ITT) principle. Each participant scored as having an event only if they experienced one or more of the elements of the composite. Participants with missing endpoint information excluded.

Time frame: Day 1 up to 24 Weeks + 2 Days or 355 Days (Discontinued Early)

Population: All randomized participants with non-missing secondary endpoint (n/N: 84/2609; 104/2635, in apixaban, enoxaparin/warfarin arms, respectively). Participants categorized to assigned arm, regardless of treatment actually received. Intent to Treat principle. Confidence interval (CI) for event rate calculated based on Wald asymptotic confidence limits.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Composite of Recurrent Symptomatic Venous Thromboembolism (VTE) or All-Cause Death0.0322 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Composite of Recurrent Symptomatic Venous Thromboembolism (VTE) or All-Cause Death0.0395 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.p-value: 0.155495% CI: [0.6146, 1.0812]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Composite of Recurrent Symptomatic VTE, Myocardial Infarction, Stroke, CV-related Death, Clinically Relevant Non-major (CRNM) Bleeding or Major Bleeding

VTE=Nonfatal DVT or nonfatal PE adjudicated by ICAC blinded to treatment. DVT: compression ultrasound and/or venography; PE: spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Major Bleeding = acute, clinically overt bleeding: decrease in Hgb of 2 g/dL or more or bleeding leading to transfusion or bleeding in a critical site or fatal bleeding. CRNM = acute clinically overt bleeding: compromising hemodynamics, leading to hospitalization, hematoma, epistasis \>5 minutes or repetitive, gingival bleeding, hematuria, macroscopic gastrointestinal hemorrhage, rectal blood loss, hemoptysis. n/N (n=number of participants with observation; N=Total number of participants, excluding those with missing endpoint and including those not in the efficacy evaluable population with a bleeding event that occurred during treatment period). Events included regardless of whether or not treatment was received (ITT).

Time frame: Day 1 up to 24 Weeks + 2 Days or 355 Days (Discontinued Early)

Population: Total number participants in each treatment group, excluded those with missing endpoint and included those not in the efficacy evaluable population with bleeding event which occurred during treatment (n/N: 183/2617; 333/2641). Events included as per ITT principle. CI for event rate calculated based on Wald asymptotic confidence limits.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Composite of Recurrent Symptomatic VTE, Myocardial Infarction, Stroke, CV-related Death, Clinically Relevant Non-major (CRNM) Bleeding or Major Bleeding0.0699 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Composite of Recurrent Symptomatic VTE, Myocardial Infarction, Stroke, CV-related Death, Clinically Relevant Non-major (CRNM) Bleeding or Major Bleeding0.1261 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.p-value: <0.000195% CI: [0.4658, 0.6569]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Composite of Recurrent Symptomatic VTE or Cardiovascular (CV)-Related Death

VTE included: nonfatal DVT or nonfatal PE. All events were adjudicated by an ICAC blinded to treatment. DVT was assessed by compression ultrasound and/or venography; PE was assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Event rate (proportion of participants with event) calculated as n/N (n=number of participants with observation; N=total number of efficacy evaluable participants, participants with missing endpoint information excluded). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Composite endpoint included events at any time from randomization until end of the intended treatment period, regardless whether drug treatment was received, ie, ITT principle. Each participant scored as having an event only if the participant experienced one or more of the elements of the composite.

Time frame: Day 1 up to 24 Weeks + 2 Days or 355 Days (Discontinued Early)

Population: All randomized participants with non-missing secondary endpoint (n/N: 61/2609; 77/2635, in apixaban, enoxaparin/warfarin arms, respectively). Participants categorized to assigned arm, regardless of treatment actually received. Intent to Treat principle. CI for event rate calculated based on Wald asymptotic confidence limits.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Composite of Recurrent Symptomatic VTE or Cardiovascular (CV)-Related Death0.0234 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Composite of Recurrent Symptomatic VTE or Cardiovascular (CV)-Related Death0.0292 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.p-value: 0.184895% CI: [0.5737, 1.1137]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Composite of Recurrent Symptomatic VTE or VTE-related Death or Major Bleeding

VTE included: nonfatal DVT or nonfatal PE. All events were adjudicated by an ICAC blinded to treatment. DVT assessed by compression ultrasound and/or venography; PE assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Major bleeding defined by International Society on Thrombosis and Haemostasis: acute, clinically overt bleeding associated with decrease in hemoglobin (Hgb) of 2 g/dL or more or bleeding leading to transfusion or bleeding in a critical site or bleeding that is fatal . Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants, excluding those with missing endpoint and including those not in the efficacy evaluable population with a bleeding event that occurred during treatment period. Events included regardless of whether or not participant received treatment, ie, ITT principle

Time frame: Day 1 up to 24 Weeks + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants in each randomized arm, excluded those with missing endpoint and included those not in the efficacy evaluable population with bleeding event which occurred during treatment (n/N: 73/2610; 118/2635). Confidence interval (CI) for event rate calculated based on Wald asymptotic confidence limits.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Composite of Recurrent Symptomatic VTE or VTE-related Death or Major Bleeding0.0280 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Composite of Recurrent Symptomatic VTE or VTE-related Death or Major Bleeding0.0448 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.p-value: 0.001195% CI: [0.4682, 0.8306]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Major Bleeding During the Treatment Period in Treated Participants

All events were adjudicated by an ICAC blinded to treatment. Bleeding defined by International Society on Thrombosis and Haemostasis: Major Bleeding: acute, clinically overt bleeding: decrease in hemoglobin (hgb) of 2 g/dL or more or bleeding leading to transfusion or bleeding in a critical site or fatal bleeding. Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants in respective treatment group (all participants who received at least one dose of study drug). Participants were categorized to the treatment group to which they were assigned unless incorrect study treatment was received throughout the study, in which case the participant was categorized according to the treatment received.

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants receiving at least one dose of study drug n/N: 15/2676; 49/2689, in apixaban and enoxaparin/warfarin groups, respectively. CI for event rate calculated based on Wald asymptotic confidence limits. Participants were categorized according to the actual treatment received.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Major Bleeding During the Treatment Period in Treated Participants0.0056 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Major Bleeding During the Treatment Period in Treated Participants0.0182 proportion of participants
Comparison: Hypothesis: apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint. As per the hierarchical statistical testing cascade, inferential testing for adjudicated major bleeding occurred because non-inferiority for VTE/VTE-related death (Primary efficacy endpoint) was demonstrated earlier. Rejection of the null hypothesis for equivalence for major bleeding allowed inferential testing for superiority of VTE/VTE-related death.p-value: <0.000195% CI: [0.1728, 0.5452]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Major/CRNM Bleeding During the Treatment Period in Treated Participants

Major Bleeding = acute, clinically overt bleeding: decrease in hemoglobin of 2 g/dL or more, or bleeding leading to transfusion, or bleeding in a critical site, or fatal bleeding. CRNM = acute clinically overt bleeding: compromising hemodynamics, leading to hospitalization, hematoma, epistasis \>5 minutes or repetitive, gingival bleeding, hematuria, macroscopic gastrointestinal hemorrhage, rectal blood loss, hemoptysis. Minor =: All acute clinically overt bleeding events not meeting the criteria for either major bleeding or CRNM. All events were adjudicated by an ICAC blinded to treatment. Total bleeding = any of major, or CRNM, or minor bleeding. Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of treated (received at least 1 dose of study drug).

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants receiving at least one dose of study drug n/N: 115/2676; 261/2689, in apixaban and enoxaparin/warfarin groups, respectively. CI for event rate calculated based on Wald asymptotic confidence limits. Participants were categorized according to the actual treatment received.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Major/CRNM Bleeding During the Treatment Period in Treated Participants0.0430 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Major/CRNM Bleeding During the Treatment Period in Treated Participants0.0971 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint. Inferential testing was not conducted because the null hypothesis pertaining to superiority for VTE/VTE-related death was not rejected.p-value: <0.000195% CI: [0.3566, 0.5453]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Minor Bleeding During the Treatment Period in Treated Participants

Bleeding defined by International Society on Thrombosis and Haemostasis: Minor bleeding: all acute clinically overt bleeding events not meeting the criteria for either major bleeding or CRNM. All events wre adjudicated by an ICAC blinded to treatment. Event rate (proportion of participants) calculated as n/N (n=number of participants with observation; N=Total number of participants in respective treatment group (all participants who received at least one dose of study drug). Participants were categorized to the treatment group to which they were assigned unless incorrect study treatment was received throughout the study, in which case the participant was categorized according to the treatment received.

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants receiving at least one dose of study drug n/N: 313/2676; 505/2689, in apixaban and enoxaparin/warfarin groups, respectively. CI for event rate calculated based on Wald asymptotic confidence limits. Participants were categorized according to the actual treatment received.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Minor Bleeding During the Treatment Period in Treated Participants0.1170 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Minor Bleeding During the Treatment Period in Treated Participants0.1878 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.p-value: <0.000195% CI: [0.5432, 0.7034]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Symptomatic Nonfatal Deep Vein Thrombosis (DVT) During the Intended Treatment Period

DVT adjudicated by an ICAC blinded to treatment. DVT evaluated by: compression ultrasound and/or venography. Includes events that occurred during the intended treatment period, regardless of whether the participant received study medication, intent to treat principle (ITT). Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants, excluding those with missing endpoint). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early).

Time frame: Day 1 up to 24 Weeks + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants in each randomized arm (ITT), excluding those with missing endpoint (n/N: 22/2608; 35/2633). CI for event rate calculated based on Wald asymptotic confidence limits.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Symptomatic Nonfatal Deep Vein Thrombosis (DVT) During the Intended Treatment Period0.0084 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Symptomatic Nonfatal Deep Vein Thrombosis (DVT) During the Intended Treatment Period0.0133 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.95% CI: [0.3735, 1.0787]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Symptomatic Nonfatal Pulmonary Embolism (PE) During the Intended Treatment Period

PE adjudicated by an ICAC blinded to treatment. PE: spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Includes events that occurred during the intended treatment period, regardless of whether the participant received study medication (ITT principle). Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants, excluding those with missing endpoint). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early).

Time frame: Day 1 to Week 24 + + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants in each randomized arm (ITT), excluding those with missing endpoint (n/N: 27/2606; 25/2632). CI for event rate calculated based on Wald asymptotic confidence limits.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Symptomatic Nonfatal Pulmonary Embolism (PE) During the Intended Treatment Period0.0104 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Symptomatic Nonfatal Pulmonary Embolism (PE) During the Intended Treatment Period0.0095 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.95% CI: [0.6363, 1.8793]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Total Bleeding During the Treatment Period in Treated Participants

Bleeding defined by International Society on Thrombosis and Haemostasis: Total Bleeding defined as any of major, CRNM, or minor bleeding. All events were adjudicated by an ICAC blinded to treatment. Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants in respective treatment group (all participants who received at least one dose of study drug). Participants were categorized to the treatment group to which they were assigned unless incorrect study treatment was received throughout the study, in which case the participant was categorized according to the treatment received.

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants receiving at least one dose of study drug n/N: 402/2676; 676/2689, in apixaban and enoxaparin/warfarin groups, respectively. CI for event rate calculated based on Wald asymptotic confidence limits. Participants were categorized according to the actual treatment received.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Total Bleeding During the Treatment Period in Treated Participants0.1502 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Total Bleeding During the Treatment Period in Treated Participants0.2514 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.p-value: <0.000195% CI: [0.5318, 0.6629]Cochran-Mantel-Haenszel
Secondary

Incidence of Adjudicated Venous Thromboembolism (VTE)-Related Death During the Intended Treatment Period

VTE-related death included: DVT-related death or PE-related death. All events were adjudicated by an ICAC blinded to treatment. DVT was assessed by compression ultrasound and/or venography; PE was assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Event rate (proportion of participants with event) calculated as n/N (n=number of participants with observation; N=total number of participants in respective treatment groups excluding participants with missing endpoint information). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Includes events that occur during the intended treatment period regardless of whether or not the participant received study medication (ITT principle).

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants in respective treatment groups excluding participants with missing endpoint information. (n/N: 12/2608; 16/2630). CI for event rate calculated based on Wald asymptotic confidence limits.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Adjudicated Venous Thromboembolism (VTE)-Related Death During the Intended Treatment Period0.0046 proportion of participants
Enoxaparin + WarfarinIncidence of Adjudicated Venous Thromboembolism (VTE)-Related Death During the Intended Treatment Period0.0061 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.95% CI: [0.356, 1.5889]Cochran-Mantel-Haenszel
Secondary

Incidence of All-Cause Death During the Intended Treatment Period

Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Includes events that occurred during the intended treatment period, regardless of whether the participant received study medication (ITT principle). Event rate (proportion of participants with event): n/N (n=number of participants with observation; N=Total number of participants, excluding those with missing endpoint information).

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants excluding those with missing endpoint (n/N: 41/2608; 52/2630). Events included regardless of whether or not participant received treatment, ie, ITT principle. CI for event rate calculated based on Wald asymptotic confidence limits.

ArmMeasureValue (NUMBER)
ApixabanIncidence of All-Cause Death During the Intended Treatment Period0.0157 proportion of participants
Enoxaparin + WarfarinIncidence of All-Cause Death During the Intended Treatment Period0.0198 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.95% CI: [0.5287, 1.1906]Cochran-Mantel-Haenszel
Secondary

Incidence of Cardiovascular (CV)-Related Death Including VTE-related Death During the Intended Treatment Period

VTE-related death included: DVT-related death or PE-related death. All events were adjudicated by an ICAC blinded to treatment. DVT assessed by compression ultrasound and/or venography; PE assessed by spiral computed tomography scanning, pulmonary angiography, and/or ventilation/perfusion lung scan. Event rate (proportion of participants with event) calculated as n/N (n=number of participants with observation; N=total number of participants in respective treatment groups excluding participants with missing endpoint information). Intended treatment period: longer of the dosing period plus 2 days (completed treatment) or 355 days (discontinued early). Includes events that occur during the intended treatment period regardless of whether or not the participant received study medication (ITT principle).

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: Total number of participants in respective groups excluding those with missing endpoint information (n/N: 15/2608; 23/2630). CI for event rate calculated based on Wald asymptotic confidence limits.

ArmMeasureValue (NUMBER)
ApixabanIncidence of Cardiovascular (CV)-Related Death Including VTE-related Death During the Intended Treatment Period0.0058 proportion of participants
Enoxaparin + WarfarinIncidence of Cardiovascular (CV)-Related Death Including VTE-related Death During the Intended Treatment Period0.0087 proportion of participants
Comparison: Exploratory hypothesis of apixaban therapy being superior to enoxaparin/warfarin therapy for the adjudicated endpoint.95% CI: [0.3419, 1.2508]Cochran-Mantel-Haenszel
Secondary

Number of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated Participants

Treated Participants: all who received at least 1 dose of study drug. Participants categorized to the treatment group to which they were assigned unless incorrect study treatment was received throughout the study, in which case the participant was categorized according to treatment received. Included all SAEs and AEs with onset from first dose to last dose + 2 days (for AEs) or + 30 days (for SAEs); note; bleeding AEs and SAEs from first dose to last dose + 2 days included. Discontinuations due to AE included all AEs/SAEs from first dose until drug was discontinued. AE=any new unfavorable symptom, sign, or disease or worsening of a preexisting condition that may not have a causal relationship with treatment. SAE=a medical event that at any dose results in death, persistent or significant disability/incapacity, or drug dependency/abuse; is life-threatening, an important medical event, or a congenital anomaly/birth defect; or requires or prolongs hospitalization.

Time frame: First dose to last dose of 24 Weeks + 2 days (AEs) or + 30 days (SAEs) or until drug discontinued

Population: Total number of participants receiving at least one dose of study drug. Participants were categorized according to the actual treatment received.

ArmMeasureGroupValue (NUMBER)
ApixabanNumber of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsSAE417 participants
ApixabanNumber of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsDiscontinued Due to AE or SAE162 participants
ApixabanNumber of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsBleeding AE or SAE415 participants
ApixabanNumber of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsDeath37 participants
ApixabanNumber of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsAE1795 participants
Enoxaparin + WarfarinNumber of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsDeath44 participants
Enoxaparin + WarfarinNumber of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsAE1923 participants
Enoxaparin + WarfarinNumber of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsSAE410 participants
Enoxaparin + WarfarinNumber of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsBleeding AE or SAE695 participants
Enoxaparin + WarfarinNumber of Participants With Adverse Events (AEs), Serious AEs (SAEs), Bleeding AEs, Discontinuations Due to AEs and Death During the Treatment Period in Treated ParticipantsDiscontinued Due to AE or SAE199 participants
Secondary

Number of Treated Participants With Marked Abnormalities in Creatine Kinase, Uric Acid, and Total Protein Laboratory Tests

Creatine kinase High: \>5\*ULN Units/Liter (U/L); Total Protein High/Low: \< 0.9 \*LLN or \> 1.1\*ULN, or if pre-dose \< LLN then use 0.9\* pre-dose or \> ULN if pre-dose \> ULN then use 1.1 \*pre-dose or \<LLN; Uric acid High: \> 1.5\* ULN, or if pre-dose \> ULN then use \> 2 \*pre-dose.

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: N=Treated participants who received at least one dose of study drug and had non-missing laboratory measurements.

ArmMeasureGroupValue (NUMBER)
ApixabanNumber of Treated Participants With Marked Abnormalities in Creatine Kinase, Uric Acid, and Total Protein Laboratory TestsCreatine Kinase High (N=2601, 2596)20 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Creatine Kinase, Uric Acid, and Total Protein Laboratory TestsUric Acid High (N=2601, 2596)6 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Creatine Kinase, Uric Acid, and Total Protein Laboratory TestsTotal Protein Low (N=2601, 2596)15 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Creatine Kinase, Uric Acid, and Total Protein Laboratory TestsTotal Protein High (N=2601, 2596)0 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Creatine Kinase, Uric Acid, and Total Protein Laboratory TestsTotal Protein High (N=2601, 2596)0 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Creatine Kinase, Uric Acid, and Total Protein Laboratory TestsCreatine Kinase High (N=2601, 2596)24 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Creatine Kinase, Uric Acid, and Total Protein Laboratory TestsTotal Protein Low (N=2601, 2596)16 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Creatine Kinase, Uric Acid, and Total Protein Laboratory TestsUric Acid High (N=2601, 2596)3 participants
Secondary

Number of Treated Participants With Marked Abnormalities in Electrolyte Laboratory Tests

Bicarbonate milliequivalents/Liter (mEq/L) Low/High: \< 0.75\*LLN or \> 1.25\*ULN, or if pre-dose \< LLN then use \< 0.75\*pre-dose or \> ULN if pre-dose \> ULN then use \> 1.25\*pre-dose or \< LLN; Serum Calcium mg/dL Low/High: \< 0.8\*LLN or \> 1.2\*ULN, or if pre-dose \< LLN then use \< 0.75\*pre-dose or \> ULN if pre-dose \> ULN then use \> 1.25\*pre-dose or \< LLN; Serum Chloride mEq/L: \< 0.9\*LLN or \> 1.1\*ULN, or if pre-dose \< LLN then use \< 0.9\*pre-dose or \> ULN if pre-dose \> ULN then use \> 1.1\*pre-dose or \< LLN; Serum Potassium mEq/L: \< 0.9\*LLN or \> 1.1\*ULN, or if pre-dose \< LLN then use \< 0.9\*pre-dose or \> ULN if pre-dose \> ULN then use \> 1.1\*pre-dose or \< LLN; Serum Sodium mEq/L: \< 0.95\*LLN or \> 1.05\*ULN, or if pre-dose \< LLN then use \< 0.95\*pre-dose or \> ULN if pre-dose \> ULN then use \> 1.05\*pre-dose or \< LLN.

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: N=Treated participants who received at least one dose of study drug and had non-missing laboratory measurements.

ArmMeasureGroupValue (NUMBER)
ApixabanNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsTotal Calcium Low (N=2601,2596)3 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsChloride Low Total Calcium High (N=2601,2596)0 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsBicarbonate High (N=2600,2593)17 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsPotassium Low (N=2601,2596)26 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsTotal Calcium High (N=2601,2596)12 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsPotassium High (N=2601,2596)19 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsBicarbonate Low (N=2600,2593)44 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsSodium Low (N=2601,2596)10 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsChloride Low Total Calcium Low (N=2601,2596)5 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsSodium Low (N=2601,2596)4 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsChloride Low Total Calcium Low (N=2601,2596)3 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsBicarbonate Low (N=2600,2593)31 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsBicarbonate High (N=2600,2593)11 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsTotal Calcium Low (N=2601,2596)10 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsTotal Calcium High (N=2601,2596)11 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsSodium Low (N=2601,2596)4 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsChloride Low Total Calcium High (N=2601,2596)1 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsPotassium Low (N=2601,2596)22 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsPotassium High (N=2601,2596)22 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Electrolyte Laboratory TestsSodium Low (N=2601,2596)6 participants
Secondary

Number of Treated Participants With Marked Abnormalities in Hematology Laboratory Tests

Lower limit of normal (LLN). Upper limit of normal (ULN). Pre-therapy (PreRx). Absolute (Abs) neutrophil count, bands + neutrophils (ANC). Cells per microliter (c/µL). Grams per deciliter (g/dL). Cells per Liter (c/L). Millimeter (MM). White blood cells: \< 0.75\*LLN, \> 1.25\*ULN; Hemoglobin: \<= 11.5 g/dL (males), \<= 9.5 g/dL (females); Hematocrit: \<= 37% (males), \<= 32% (females); Erythrocytes: \<0.75\*10\^6 c/µL\*PreRx; Platelet count: \< 75\*10\^9 c/L, \> 700\*10\^9 c/L; ANC: \< 1.00\*10\^3 c/µL; Abs eosinophils: \> 0.750\*10\^3 c/µL; Abs Basophils: \> 400/MM\^3; Abs Monocytes\> 2000/MM\^3; Abs Lymphocytes: \< 0.750\*10\*3 c/ µL, \> 7.5\*10\^3 c/ µL.

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: N=Treated participants who received at least one dose of study drug and had non-missing laboratory measurements.

ArmMeasureGroupValue (NUMBER)
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsErthrocytes Low (N=2599, 2593)23 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsHematocrit Low (N=2588, 2587)26 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsHemoglobin Low (N=2599, 2593)96 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsPlatelet Count Low (N=2594, 2589)23 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsLeukocytes Low (N=2528, 2519)41 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsLeukocytes High (N=2528, 2519)26 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Basophils High (N=2594,2589)1 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Eosinophils High (N=2594,2589)84 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Lyphocytes Low (N=2594,2589)94 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Lyphocytes High (N=2594,2589)4 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Monocytes High (N=2594,2589)1 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Neutrophils Low (N=2594,2589)9 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Monocytes High (N=2594,2589)2 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsErthrocytes Low (N=2599, 2593)17 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Basophils High (N=2594,2589)2 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsHematocrit Low (N=2588, 2587)20 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Lyphocytes High (N=2594,2589)3 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsHemoglobin Low (N=2599, 2593)101 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Eosinophils High (N=2594,2589)79 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsPlatelet Count Low (N=2594, 2589)13 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Neutrophils Low (N=2594,2589)20 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsLeukocytes Low (N=2528, 2519)41 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsAbsolute Lyphocytes Low (N=2594,2589)76 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Hematology Laboratory TestsLeukocytes High (N=2528, 2519)15 participants
Secondary

Number of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory Tests

Blood urea nitrogen (BUN), milligrams/deciliter (mg/dL), units per liter (U/L). BUN mg/dL High: \> 1.5\*ULN; Creatinine mg/dL: \> 1.5\*ULN; Alanine aminotransferase (ALT) U/L: \> 3\*ULN; Aspartate aminotransferase (AST) U/L: \> 3\*ULN; Alkaline phosphatase U/L: \> 2\*ULN; Bilirubin Direct mg/dL: \> 1.5\*ULN; Bilirubin Total mg/dL: \> 2\*ULN.

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: N=Treated participants who received at least one dose of study drug and had non-missing laboratory measurements.

ArmMeasureGroupValue (NUMBER)
ApixabanNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsALT High (N=2601, 2598)52 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsAST High (N=2601, 2598)40 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsCreatinine High (N=2601, 2596)47 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsDirect Bilirubin High (N=2601, 2593)28 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsALP High (N=2601, 2598)35 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsTotal Bilirubin High (N=2601, 2597)8 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsBUN High (N=517, 523)2 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsTotal Bilirubin High (N=2601, 2597)7 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsBUN High (N=517, 523)7 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsCreatinine High (N=2601, 2596)37 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsALT High (N=2601, 2598)145 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsALP High (N=2601, 2598)27 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsAST High (N=2601, 2598)40 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Kidney and Liver Function Laboratory TestsDirect Bilirubin High (N=2601, 2593)21 participants
Secondary

Number of Treated Participants With Marked Abnormalities in Urinalysis Laboratory Tests

All tests in urine: Glucose: If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4; Protein: If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4; Blood: If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4; Leukocyte esterase: If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4;Red blood cells (RBC): If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4; White blood cells (WBC): If missing pre-dose use ≥ 2, or if value ≥ 4, or if pre-dose = 0 or 0.5 use ≥ 2, or if pre-dose = 1 use ≥ 3, or if pre-dose = 2 or 3 use ≥ 4.

Time frame: Day 1 to Week 24 + 2 Days or 355 Days (Discontinued Early)

Population: N=Treated participants who received at least one dose of study drug and had non-missing laboratory measurements.

ArmMeasureGroupValue (NUMBER)
ApixabanNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsLeukocyte Esterase in Urine High (N=2289, 2273)105 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsRBC + WBC in Urine High (N=1685, 1719)359 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsGlucose in Urine High (N=2289, 2273)46 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsRBC in Urine High (N=1293, 1389)111 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsProtein in Urine High (N=2289, 2273)41 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsWBC in Urine High (N=1354, 1361)274 participants
ApixabanNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsBlood in Urine High (N=2289, 2273)85 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsWBC in Urine High (N=1354, 1361)263 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsBlood in Urine High (N=2289, 2273)127 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsGlucose in Urine High (N=2289, 2273)31 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsLeukocyte Esterase in Urine High (N=2289, 2273)102 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsProtein in Urine High (N=2289, 2273)50 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsRBC + WBC in Urine High (N=1685, 1719)361 participants
Enoxaparin + WarfarinNumber of Treated Participants With Marked Abnormalities in Urinalysis Laboratory TestsRBC in Urine High (N=1293, 1389)140 participants

Source: ClinicalTrials.gov · Data processed: Mar 10, 2026