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A Phase III Study of Apixaban in Patients With Atrial Fibrillation

Apixaban Versus Acetylsalicylic Acid (ASA) to Prevent Stroke in Atrial Fibrillation Patients Who Have Failed or Are Unsuitable for Vitamin K Antagonist Treatment: A Randomized Double-blind Trial

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00496769
Acronym
AVERROES
Enrollment
6421
Registered
2007-07-04
Start date
2007-08-31
Completion date
2017-05-25
Last updated
2018-06-15

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

Conditions

Atrial Fibrillation

Brief summary

The purpose of this clinical research study is to determine whether apixaban is more effective than acetylsalicylic acid in the prevention of strokes associated with patients with atrial fibrillation. The safety of this treatment will also be studied.

Detailed description

An optional Long-term Open-label Extension Phase of treatment with apixaban will be provided for qualifying participants following the conclusion of the double-blind phase

Interventions

DRUGApixaban

Tablets, oral, 5 mg (2.5 mg in patients meeting any 2 of the following criteria: 80 years of age and older, weight of 60 kilograms or less, and a serum creatinine level of 1.5 mg/dL or higher), twice daily, up to 156 weeks

DRUGAcetylsalicylic acid

Tablets, oral, 81-324 mg, once daily, up to 156 weeks

Sponsors

Pfizer
CollaboratorINDUSTRY
Bristol-Myers Squibb
Lead SponsorINDUSTRY

Study design

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

Eligibility

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

Inclusion criteria

Key Inclusion Criteria: * Male and female * Age of 50 years or older * Permanent, paroxysmal, or persistent atrial fibrillation (at screening or within 6 months prior to enrollment) documented by 12-lead electrocardiogram) * At least 1 of the following risk factors for stroke: * Prior stroke or transient ischemic attack * Age of 75 years or older * Arterial hypertension on treatment * Diabetes mellitus * Heart failure (New York Health Authority Class 2 or greater at time of enrollment) * Left ventricular ejection fraction of 35% or less, documented within 6 months of enrollment * Peripheral arterial disease (previous arterial revascularization, limb or foot amputation, or current intermittent claudication with ankle-arm systolic blood pressure ratio \<0.9) * Not currently receiving vitamin K antagonist therapy for 1 of the following reasons: * Previous vitamin K antagonist therapy demonstrated as unsuitable and discontinued * Vitamin K antagonist therapy not previously used but expected unsuitable Key

Exclusion criteria

* Women who are pregnant or breast feeding * Women of child bearing potential who are unwilling to meet the study requirements for pregnancy testing or are unwilling or unable to use an acceptable method to avoid pregnancy * Atrial fibrillation due to reversible causes, such as thyrotoxicosis or pericarditis * Valvular disease requiring surgery * Planned ablation procedure for atrial fibrillation to be performed within 3 months * Conditions other than atrial fibrillation that require chronic anticoagulation (such as, prosthetic mechanical heart valve, venous thromboembolism) * Patients with serious bleeding in the last 6 months or at high risk for bleeding, including but not limited to those with: * Active peptic ulcer disease * Platelet count \<100,000/mm\^3 or hemoglobin \<10g/dL * Recent stroke (within 10 days) * Documented hemorrhagic tendencies or blood dyscrasias * Current alcohol or drug abuse or psychosocial reasons that make study participation impractical * Severe comorbid condition with life expectancy \<1 year * Severe renal insufficiency; any patient with a serum creatinine level \>2.5 mg/dL or a calculated creatinine clearance \<25 mL/min is excluded * Alanine transaminase or aspartate aminotransferase levels \>2 times upper limit of normal (ULN) or a total bilirubin level \>1.5 times ULN (unless an alternative causative factor \[such as Gilbert's syndrome\] is identified) * Allergy or adverse reaction to acetylsalicylic acid * Required treatment with a thienopyridine (clopidogrel or ticlopidine) * Prisoners or participants who are compulsory detained (involuntarily incarcerated) * Use of an investigational drug or device within the past 30 days or prior randomization into an apixaban clinical study * Patients who are compulsorily detained for treatment for a psychiatric or physical illness

Design outcomes

Primary

MeasureTime frameDescription
Event Rate of Stroke/Systemic Embolism During the Intended-treatment PeriodRandomization to efficacy cutoff date of May 28, 2010 (date revised following cessation of study for superior efficacy)Event rate=percent of participants with an event divided by the total participants in the arm. Intended-treatment period=date of randomization to the efficacy cutoff date, which was to be the date on which at least 226 unrefuted original primary efficacy events occurred (date revised to May 28, 2010 following cessation of study for superior efficacy.)

Secondary

MeasureTime frameDescription
Event Rate for the Composite of Stroke of Any Type, Systemic Embolism, Myocardial Infarction, or Vascular Death During the Double-blind Treatment PeriodRandomization to efficacy cutoff date of May 28, 2010 (date revised following cessation of study for superior efficacy)Event rate=percent of participants with an event divided by the total participants in the arm.
Event Rate of All-cause Death; Net Clinical Benefit-Composite of Stroke, Systemic Embolism, Myocardial Infarction, Vascular Death, and Major Bleeding; and Vascular DeathRandomization to efficacy cutoff date of May 28, 2010 (date revised following cessation of study for superior efficacy)Event rate=percent of participants with an event divided by the total participants in the arm.
Event Rates for Major Bleeding, Major or Clinically Relevant Nonmajor (CNRM) Bleeding, and All Bleeding in the Double-blind PeriodFirst dose of study drug (Day 1) to the earlier of a patient's discontinuation of double-blind study drug or the attainment of at least 226 primary efficacy events up to May 28, 2010Event rate=percent of participants with an event divided by the total participants in the arm.
Rate of Unrefuted Bleeding From First Dose of Double-blind Study Drug to First Occurence of Unrefuted Bleeding During the Double-blind Treatment PeriodDay 1 to first bleeding event up to efficacy cutoff date of May 28, 2010 (date revised following cessation of study for superior efficacy)Event rate=percent of participants with an event divided by the total participants in the arm.
Number of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeFirst dose of study drug (Day 1) to 30 days after last dose of blinded study drugAE=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 Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityFirst dose of study drug (Day 1) to 30 days after last dose of blinded study drugBL=baseline, LLN=lower limit of normal, ULN=upper limit of normal. Hemoglobin (g/dL), low: BL\>2 or value ≤8; hematocrit(%), low: \<0.75\*BL; erythrocytes (\*10\^6 cells/μL), low: \<0.75\*BL; platelet count (\*10\^9 cells/L),low: \<100\*10\^9 cells/L; leukocytes (\*10\^3 cells/μL), low if \<0.8\*BL and BL\<LLN or \<LLN and BL \>ULN or \<0.75\*LLN when BL is missing or LLN ≤BL≤ ULN, high if \>1.2\*BL and BL\>ULN or \>ULN when BL and BL\<LLN or \>1.25\*ULN when BL is missing or LLN≤BL≤ULN; neutrophils (absolute), low: \<1.0\*10\^3 cells/μL; eosinophils (absolute), high: \>0.750\*10\^3 cells/μL; basophils (absolute), high: \>0.4\*10\^3 cells/μL; monocytes (absolute), high: 2\*10\^3 cells/μL; lymphocytes (absolute), low if \<0.75\*10\^3 cells/μL, high if \>7.50\*10\^3 cells/μL; ALP (U/L), high: 2\*ULN; AST (U/L), high: 3\*ULN; AST (U/L), high: 3\*ULN; bilirubin, total (mg/dL), high: \>2\*ULN; bilirubin, direct (mg/dL), high: 1.5\*ULN; BUN (mg/dL), high:\>2\*ULN; creatinine (mg/dL), high: \>1.5\*ULN.
Number of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)First dose of study drug (Day 1) to 30 days after last dose of blinded study drugLLN=lower limit of normal; ULN=upper limit of normal; BL=baseline. Sodium, serum (mEq/L):low if \<0.95\*BL and BL\<LLN or \<LLN and BL\>ULN or \<0.95\*LLN when BL missing or LLN ≤BL≤ULN, high if \>1.05\*BL and BL\>ULN or \>ULN and BL\<LLN or \>1.05\*ULN when BL missing or LLN≤BL≤ULN; potassium(mEq/L):low if \<0.90\*BL and BL\<LLN or \<LLN and BL\>ULN or \<0.90\*LLN if BL missing or LLN≤BL≤ULN, high if \>1.10\*BL and BL\>ULN or\>ULN and BL\<LLN or \>1.10\*ULN when BL missing or LLN≤BL≤ULN; chloride(mEq/L):low if \<0.90\*BL and BL\<LLN or \<LLN and BL\>ULN or \<0.90\*LLN if BL missing or LLN≤BL ≤ULN, high if \>1.10\*BL and BL\>ULN or \>ULN and BL\<LLN or \>1.10\* ULN if BL missing or LLN≤BL≤ULN; calcium(mg/dL):low if \<0.75\*BL and BL\<LLN or \<LLN and BL\>ULN or \<0.80\*LLN if BL missing or LLN≤BL≤ULN, high if \>1.25\*BL and BL\>ULN or \>ULN if BL\<LLN or \>1.20\*ULN if BL missing or LLN≤BL≤ULN ; bicarbonate(mEq/L):low if \<0.75\*BL when BL\<LLN or \<LLN when BL\>ULN or \<0.75\*LLN if BL missing or LLN≤BL≤ULN, high if \>1.25\*BL when BL\>ULN or \>ULN

Countries

Argentina, Australia, Austria, Belgium, Brazil, Canada, Chile, China, Colombia, Czechia, Denmark, Finland, France, Germany, Greece, Hong Kong, India, Indonesia, Israel, Italy, Malaysia, Mexico, Norway, Philippines, Poland, Russia, Singapore, South Africa, South Korea, Spain, Sweden, Taiwan, Turkey (Türkiye), Ukraine, United Kingdom, United States

Participant flow

Pre-assignment details

A total 6421 patients were enrolled in the study. Of these, 5598 were randomized (2807 to apixaban and 2791 to acetylsalicylic acid). Most (435) of the patients who were not randomized (823) no longer met study criteria. Of those randomized, 5578 received treatment (2798 with apixaban, and 2780 with acetylsalicylic acid).

Participants by arm

ArmCount
Apixaban, 2.5 or 5 mg Twice Daily
Patients received 5 mg of apixaban twice daily. Participants who fulfilled any 2 of the following criteria at baseline received apixaban, 2.5 mg twice daily: age older than 80 years, body weight of 60 kg or less, Serum creatinine level ≥1.5 mg/dL. Participants randomized to the 2.5 mg twice daily dose of apixaban continued on this dose throughout the study even if they no longer fulfilled the previous criteria.
2,807
Acetylsalicylic Acid, 81-324 mg Once Daily
Patients received 81 to 324 mg of acetylsalicylic acid once daily, with dosage based on investigator discretion
2,791
Total5,598

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Double Blind>=1 reason assigned per patient5586490
Open Label>=1 reason assigned per patient001,011

Baseline characteristics

CharacteristicApixaban, 2.5 or 5 mg Twice DailyAcetylsalicylic Acid, 81-324 mg Once DailyTotal
Age, Continuous69.7 years
STANDARD_DEVIATION 9.44
70.0 years
STANDARD_DEVIATION 9.71
69.9 years
STANDARD_DEVIATION 9.58
Age, Customized
>=65 but <75 years
1049 Participants938 Participants1987 Participants
Age, Customized
< 65 years
855 Participants865 Participants1720 Participants
Age, Customized
>=75 years
903 Participants988 Participants1891 Participants
Number of Participants by Number of Risk Factors for Stroke
1 or fewer
1085 Participants1077 Participants2162 Participants
Number of Participants by Number of Risk Factors for Stroke
2 or more
1722 Participants1714 Participants3436 Participants
Number of Participants With Risk Factors for Stroke
Age of 75 years or older
903 Participants988 Participants1891 Participants
Number of Participants With Risk Factors for Stroke
Diabetes mellitus
536 Participants559 Participants1095 Participants
Number of Participants With Risk Factors for Stroke
Heart failure (NYHA class ≥2) or LVEF ≤35%
961 Participants926 Participants1887 Participants
Number of Participants With Risk Factors for Stroke
Hypertension requiring pharmacologic treatment
2408 Participants2429 Participants4837 Participants
Number of Participants With Risk Factors for Stroke
Peripheral artery disease
66 Participants78 Participants144 Participants
Number of Participants With Risk Factors for Stroke
Prior stroke or transient ischemic attack
390 Participants374 Participants764 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
6 Participants6 Participants12 Participants
Race/Ethnicity, Customized
Asian
541 Participants544 Participants1085 Participants
Race/Ethnicity, Customized
Black or African American
10 Participants26 Participants36 Participants
Race/Ethnicity, Customized
Native Hawaiian or Other Pacific Islander
3 Participants1 Participants4 Participants
Race/Ethnicity, Customized
Other
26 Participants36 Participants62 Participants
Race/Ethnicity, Customized
White
2221 Participants2178 Participants4399 Participants
Sex: Female, Male
Female
1147 Participants1174 Participants2321 Participants
Sex: Female, Male
Male
1660 Participants1617 Participants3277 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
111 / 2,798140 / 2,780286 / 3,275
other
Total, other adverse events
207 / 2,798267 / 2,780180 / 3,275
serious
Total, serious adverse events
657 / 2,798804 / 2,7801,228 / 3,275

Outcome results

Primary

Event Rate of Stroke/Systemic Embolism During the Intended-treatment Period

Event rate=percent of participants with an event divided by the total participants in the arm. Intended-treatment period=date of randomization to the efficacy cutoff date, which was to be the date on which at least 226 unrefuted original primary efficacy events occurred (date revised to May 28, 2010 following cessation of study for superior efficacy.)

Time frame: Randomization to efficacy cutoff date of May 28, 2010 (date revised following cessation of study for superior efficacy)

Population: Participants who received at least 1 dose of study drug.

ArmMeasureValue (NUMBER)
Apixaban, 2.5 or 5 mg Twice DailyEvent Rate of Stroke/Systemic Embolism During the Intended-treatment Period1.62 Percentage of events
Acetylsalicylic Acid, 81-324 mg Once DailyEvent Rate of Stroke/Systemic Embolism During the Intended-treatment Period3.63 Percentage of events
p-value: <0.0000195% CI: [0.32, 0.62]Log Rank
Secondary

Event Rate for the Composite of Stroke of Any Type, Systemic Embolism, Myocardial Infarction, or Vascular Death During the Double-blind Treatment Period

Event rate=percent of participants with an event divided by the total participants in the arm.

Time frame: Randomization to efficacy cutoff date of May 28, 2010 (date revised following cessation of study for superior efficacy)

Population: Participants who received at least 1 dose of study drug.

ArmMeasureValue (NUMBER)
Apixaban, 2.5 or 5 mg Twice DailyEvent Rate for the Composite of Stroke of Any Type, Systemic Embolism, Myocardial Infarction, or Vascular Death During the Double-blind Treatment Period4.21 Percentage of events per year
Acetylsalicylic Acid, 81-324 mg Once DailyEvent Rate for the Composite of Stroke of Any Type, Systemic Embolism, Myocardial Infarction, or Vascular Death During the Double-blind Treatment Period6.35 Percentage of events per year
p-value: 0.0002695% CI: [0.53, 0.83]Log Rank
Secondary

Event Rate of All-cause Death; Net Clinical Benefit-Composite of Stroke, Systemic Embolism, Myocardial Infarction, Vascular Death, and Major Bleeding; and Vascular Death

Event rate=percent of participants with an event divided by the total participants in the arm.

Time frame: Randomization to efficacy cutoff date of May 28, 2010 (date revised following cessation of study for superior efficacy)

Population: Participants who received at least 1 dose of study drug.

ArmMeasureGroupValue (NUMBER)
Apixaban, 2.5 or 5 mg Twice DailyEvent Rate of All-cause Death; Net Clinical Benefit-Composite of Stroke, Systemic Embolism, Myocardial Infarction, Vascular Death, and Major Bleeding; and Vascular DeathAll-cause death (n=111, 140)3.51 Percentage of events per year
Apixaban, 2.5 or 5 mg Twice DailyEvent Rate of All-cause Death; Net Clinical Benefit-Composite of Stroke, Systemic Embolism, Myocardial Infarction, Vascular Death, and Major Bleeding; and Vascular DeathNet clinical benefit (n=163, 220)5.23 Percentage of events per year
Apixaban, 2.5 or 5 mg Twice DailyEvent Rate of All-cause Death; Net Clinical Benefit-Composite of Stroke, Systemic Embolism, Myocardial Infarction, Vascular Death, and Major Bleeding; and Vascular DeathVascular death (n=84, 96)2.65 Percentage of events per year
Acetylsalicylic Acid, 81-324 mg Once DailyEvent Rate of All-cause Death; Net Clinical Benefit-Composite of Stroke, Systemic Embolism, Myocardial Infarction, Vascular Death, and Major Bleeding; and Vascular DeathAll-cause death (n=111, 140)4.42 Percentage of events per year
Acetylsalicylic Acid, 81-324 mg Once DailyEvent Rate of All-cause Death; Net Clinical Benefit-Composite of Stroke, Systemic Embolism, Myocardial Infarction, Vascular Death, and Major Bleeding; and Vascular DeathNet clinical benefit (n=163, 220)7.13 Percentage of events per year
Acetylsalicylic Acid, 81-324 mg Once DailyEvent Rate of All-cause Death; Net Clinical Benefit-Composite of Stroke, Systemic Embolism, Myocardial Infarction, Vascular Death, and Major Bleeding; and Vascular DeathVascular death (n=84, 96)3.03 Percentage of events per year
p-value: 0.0678295% CI: [0.62, 1.02]Log Rank
p-value: 0.002895% CI: [0.6, 0.9]Log Rank
p-value: 0.3658695% CI: [0.65, 1.17]Log Rank
Secondary

Event Rates for Major Bleeding, Major or Clinically Relevant Nonmajor (CNRM) Bleeding, and All Bleeding in the Double-blind Period

Event rate=percent of participants with an event divided by the total participants in the arm.

Time frame: First dose of study drug (Day 1) to the earlier of a patient's discontinuation of double-blind study drug or the attainment of at least 226 primary efficacy events up to May 28, 2010

Population: Participants who received at least 1 dose of study drug.

ArmMeasureGroupValue (NUMBER)
Apixaban, 2.5 or 5 mg Twice DailyEvent Rates for Major Bleeding, Major or Clinically Relevant Nonmajor (CNRM) Bleeding, and All Bleeding in the Double-blind PeriodMajor bleeding1.41 Percentage of events per year
Apixaban, 2.5 or 5 mg Twice DailyEvent Rates for Major Bleeding, Major or Clinically Relevant Nonmajor (CNRM) Bleeding, and All Bleeding in the Double-blind PeriodMajor or CRNM bleeding4.46 Percentage of events per year
Apixaban, 2.5 or 5 mg Twice DailyEvent Rates for Major Bleeding, Major or Clinically Relevant Nonmajor (CNRM) Bleeding, and All Bleeding in the Double-blind PeriodAll bleeding10.85 Percentage of events per year
Acetylsalicylic Acid, 81-324 mg Once DailyEvent Rates for Major Bleeding, Major or Clinically Relevant Nonmajor (CNRM) Bleeding, and All Bleeding in the Double-blind PeriodMajor bleeding0.92 Percentage of events per year
Acetylsalicylic Acid, 81-324 mg Once DailyEvent Rates for Major Bleeding, Major or Clinically Relevant Nonmajor (CNRM) Bleeding, and All Bleeding in the Double-blind PeriodMajor or CRNM bleeding3.24 Percentage of events per year
Acetylsalicylic Acid, 81-324 mg Once DailyEvent Rates for Major Bleeding, Major or Clinically Relevant Nonmajor (CNRM) Bleeding, and All Bleeding in the Double-blind PeriodAll bleeding8.32 Percentage of events per year
p-value: 0.071695% CI: [0.96, 2.45]Log Rank
p-value: 0.001795% CI: [1.1, 1.53]Log Rank
p-value: 0.014495% CI: [1.07, 1.78]Log Rank
Secondary

Number of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality

BL=baseline, LLN=lower limit of normal, ULN=upper limit of normal. Hemoglobin (g/dL), low: BL\>2 or value ≤8; hematocrit(%), low: \<0.75\*BL; erythrocytes (\*10\^6 cells/μL), low: \<0.75\*BL; platelet count (\*10\^9 cells/L),low: \<100\*10\^9 cells/L; leukocytes (\*10\^3 cells/μL), low if \<0.8\*BL and BL\<LLN or \<LLN and BL \>ULN or \<0.75\*LLN when BL is missing or LLN ≤BL≤ ULN, high if \>1.2\*BL and BL\>ULN or \>ULN when BL and BL\<LLN or \>1.25\*ULN when BL is missing or LLN≤BL≤ULN; neutrophils (absolute), low: \<1.0\*10\^3 cells/μL; eosinophils (absolute), high: \>0.750\*10\^3 cells/μL; basophils (absolute), high: \>0.4\*10\^3 cells/μL; monocytes (absolute), high: 2\*10\^3 cells/μL; lymphocytes (absolute), low if \<0.75\*10\^3 cells/μL, high if \>7.50\*10\^3 cells/μL; ALP (U/L), high: 2\*ULN; AST (U/L), high: 3\*ULN; AST (U/L), high: 3\*ULN; bilirubin, total (mg/dL), high: \>2\*ULN; bilirubin, direct (mg/dL), high: 1.5\*ULN; BUN (mg/dL), high:\>2\*ULN; creatinine (mg/dL), high: \>1.5\*ULN.

Time frame: First dose of study drug (Day 1) to 30 days after last dose of blinded study drug

Population: Participants who received at least 1 dose of study drug. n=number evaluable

ArmMeasureGroupValue (NUMBER)
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityLeukocytes, low (n=1738, 1698)12 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityHemoglobin, high (n=1956, 1893)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityHematocrit, low (n=1728, 1687)13 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityHematocrit, high (n=1728, 1687)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityErythrocytes, low (n=1728, 1687)12 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityErythrocytes, high (n=1728, 1687)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityPlatelet count, low (n=2148, 2098)7 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityPlatelet count, high (n=2148, 2098)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityHemoglobin, low (n=1956, 1893)131 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityLeukocytes, high (n=1738, 1698)14 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityNeutrophils (absolute), low (n=2170, 2138)2 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityNeutrophils (absolute), high (n=2170, 2138)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityEosinophils (absolute), low (n=2170, 2138)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityEosinophils (absolute), high (n=2170, 2138)48 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBasophils (absolute), low (n=2170, 2138)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBasophils (absolute), high (n=2170, 2138)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityMonocytes (absolute), low (n=2170, 2138)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityMonocytes (absolute), high (n=2170, 2138)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityLymphocytes (absolute), low (n=2170, 2138)52 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityLymphocytes (absolute), high (n=2170, 2138)4 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityAlkaline phosphatase (ALP), low (n=2781, 2758)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityALP, high (n=2781, 2758)34 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityAspartate phosphatase (AST), low (n=2779, 2753)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityAST, high (n=2779, 2753)28 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityAlanine aminotransferase (ALT), low (n=2779, 2753)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityALT, high (n=2779, 2753)23 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBilirubin (total), low (n=2781, 2758)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBilirubin (total), high (n=2781, 2758)30 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBilirubin (direct), low (n=2773, 2750)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBilirubin (direct), high (n=2773, 2750)241 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBlood urea nitrogen (BUN), low (n=2201, 2172)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBUN, high (n=2201, 2172)42 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityCreatinine, low (n=2209, 2178)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityCreatinine, high (n=2209, 2178)67 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityALT, high (n=2779, 2753)31 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityHemoglobin, low (n=1956, 1893)120 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityMonocytes (absolute), high (n=2170, 2138)2 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityHemoglobin, high (n=1956, 1893)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityCreatinine, high (n=2209, 2178)71 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityHematocrit, low (n=1728, 1687)9 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityLymphocytes (absolute), low (n=2170, 2138)62 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityHematocrit, high (n=1728, 1687)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBilirubin (total), low (n=2781, 2758)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityErythrocytes, low (n=1728, 1687)12 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityLymphocytes (absolute), high (n=2170, 2138)5 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityErythrocytes, high (n=1728, 1687)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBUN, high (n=2201, 2172)50 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityPlatelet count, low (n=2148, 2098)10 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityAlkaline phosphatase (ALP), low (n=2781, 2758)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityPlatelet count, high (n=2148, 2098)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBilirubin (total), high (n=2781, 2758)43 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityLeukocytes, low (n=1738, 1698)14 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityALP, high (n=2781, 2758)27 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityLeukocytes, high (n=1738, 1698)18 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBlood urea nitrogen (BUN), low (n=2201, 2172)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityNeutrophils (absolute), low (n=2170, 2138)1 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityAspartate phosphatase (AST), low (n=2779, 2753)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityNeutrophils (absolute), high (n=2170, 2138)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBilirubin (direct), low (n=2773, 2750)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityEosinophils (absolute), low (n=2170, 2138)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityAST, high (n=2779, 2753)33 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityEosinophils (absolute), high (n=2170, 2138)68 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityCreatinine, low (n=2209, 2178)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBasophils (absolute), low (n=2170, 2138)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityAlanine aminotransferase (ALT), low (n=2779, 2753)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBasophils (absolute), high (n=2170, 2138)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityBilirubin (direct), high (n=2773, 2750)248 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked AbnormalityMonocytes (absolute), low (n=2170, 2138)0 Participants
Secondary

Number of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)

ULN=upper limit of normal; LLN=lower limit of normal; BL=baseline. Creatine kinase (U/L), high:\>5\*ULN; protein, total(g/L):low if \<0.90\*BL when BL\<LLN or \<LLN when B \>ULN or \<0.90\*LLN when BL is missing or LLN≤BL≤ULN, high if \>1.10\*BL if BL\>ULN or \>ULN when BL\<LLN or \>1.10\*ULN if BL missing or LLN≤BL≤ULN.Protein,total(g/L): low if \<0.90\*BL if BL\<LLN or \<LLN if BL\>ULN or \<0.90\*LLN if BL missing or LLN≤BL≤ULN, high if \>1.10\*BL if BL\>ULN or \>ULN if BL\<LLN or \>1.10\*ULN if BL or LLN≤BL≤ULN; glucose, serum fasting (mg/dL): low if \<0.8\*BL if BL\<LLN or \<LLN when BL\>ULN or \<0.8\*LLN when BL missing or LLN≤BL≤ULN, high if \>2\*BL when BL\>ULN or \>ULN when BL\<LLN or \>1.5\*ULN if BL missing or LLN≤BL≤ULN; uric acid (mg/dL), high: \>2\*BL and BL\>ULN or\>1.5\*ULN when BL missing or BL≤ULN; glucose, urine, high; protein, urine, high; blood, urine, high; leukocyte esterase, urine, high; RBC count, urine (Hpf), high; WBC count, urine (Hpf), high: ≥2 if BL=missing,=0 or =0.5 or if ≥3 if BL=1, or if ≥4 and BL≥2.

Time frame: First dose of study drug (Day 1) to 30 days after last dose of blinded study drug

Population: Participants who received at least 1 dose of study drug. n=number evaluable

ArmMeasureGroupValue (NUMBER)
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Leukocyte esterase (urine), low (n=3,5)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Leukocyte esterase (urine), high (n=3,5)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Red blood cells (RBC) (urine), low (n=2,2)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)RBC (urine), high (n=2,2)1 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)White blood cells (urine), low (n=2,2)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)WBC (urine), high (n=2,2)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Creatine kinase, low (n=2780, 2758)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Creatine kinase, high (n=2780, 2758)13 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Protein (total), low (n=103, 109)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Protein (total), high (n=103, 109)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Uric acid, low (n=386, 390)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Uric acid, high (n=386, 390)1 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Glucose (urine), low (n=2, 3)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Glucose (urine), high (n=2, 3)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Protein (urine), low (n=3, 5)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Protein (urine), high (n=3, 5)1 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Blood (urine), low (n=3, 5)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Blood (urine), high (n=3, 5)1 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Glucose (urine), high (n=2, 3)1 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Leukocyte esterase (urine), low (n=3,5)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Red blood cells (RBC) (urine), low (n=2,2)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Protein (total), high (n=103, 109)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Leukocyte esterase (urine), high (n=3,5)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Blood (urine), high (n=3, 5)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Uric acid, low (n=386, 390)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)RBC (urine), high (n=2,2)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Protein (urine), low (n=3, 5)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)White blood cells (urine), low (n=2,2)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Uric acid, high (n=386, 390)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)WBC (urine), high (n=2,2)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Blood (urine), low (n=3, 5)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Creatine kinase, low (n=2780, 2758)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Glucose (urine), low (n=2, 3)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Creatine kinase, high (n=2780, 2758)25 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Protein (urine), high (n=3, 5)1 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Protein (total), low (n=103, 109)0 Participants
Secondary

Number of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)

LLN=lower limit of normal; ULN=upper limit of normal; BL=baseline. Sodium, serum (mEq/L):low if \<0.95\*BL and BL\<LLN or \<LLN and BL\>ULN or \<0.95\*LLN when BL missing or LLN ≤BL≤ULN, high if \>1.05\*BL and BL\>ULN or \>ULN and BL\<LLN or \>1.05\*ULN when BL missing or LLN≤BL≤ULN; potassium(mEq/L):low if \<0.90\*BL and BL\<LLN or \<LLN and BL\>ULN or \<0.90\*LLN if BL missing or LLN≤BL≤ULN, high if \>1.10\*BL and BL\>ULN or\>ULN and BL\<LLN or \>1.10\*ULN when BL missing or LLN≤BL≤ULN; chloride(mEq/L):low if \<0.90\*BL and BL\<LLN or \<LLN and BL\>ULN or \<0.90\*LLN if BL missing or LLN≤BL ≤ULN, high if \>1.10\*BL and BL\>ULN or \>ULN and BL\<LLN or \>1.10\* ULN if BL missing or LLN≤BL≤ULN; calcium(mg/dL):low if \<0.75\*BL and BL\<LLN or \<LLN and BL\>ULN or \<0.80\*LLN if BL missing or LLN≤BL≤ULN, high if \>1.25\*BL and BL\>ULN or \>ULN if BL\<LLN or \>1.20\*ULN if BL missing or LLN≤BL≤ULN ; bicarbonate(mEq/L):low if \<0.75\*BL when BL\<LLN or \<LLN when BL\>ULN or \<0.75\*LLN if BL missing or LLN≤BL≤ULN, high if \>1.25\*BL when BL\>ULN or \>ULN

Time frame: First dose of study drug (Day 1) to 30 days after last dose of blinded study drug

Population: Participants who received at least 1 dose of study drug. n=number evaluable

ArmMeasureGroupValue (NUMBER)
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Sodium (serum), low (n=1768, 1740)2 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Sodium (serum), high (n=1768, 1740)1 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Potassium (serum), low (n=1763, 1737)6 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Potassium (serum), high (n=1763, 1737)20 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Chloride (serum), low (n=1768, 1740)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Chloride (serum), high (n=1768, 1740)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Calcium (total), low (n=106, 109)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Calcium (total), high (n=106, 109)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Bicarbonate, low (n=1664, 1619)0 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Bicarbonate, high (n=1664, 1619)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Calcium (total), high (n=106, 109)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Sodium (serum), low (n=1768, 1740)6 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Chloride (serum), high (n=1768, 1740)1 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Sodium (serum), high (n=1768, 1740)2 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Bicarbonate, high (n=1664, 1619)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Potassium (serum), low (n=1763, 1737)8 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Calcium (total), low (n=106, 109)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Potassium (serum), high (n=1763, 1737)28 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Bicarbonate, low (n=1664, 1619)0 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Laboratory Test Results Meeting the Criteria for Marked Abnormality (Continued)Chloride (serum), low (n=1768, 1740)3 Participants
Secondary

Number of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as Outcome

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 of study drug (Day 1) to 30 days after last dose of blinded study drug

Population: Participants who received at least 1 dose of study drug.

ArmMeasureGroupValue (NUMBER)
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeSAEs657 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeDiscontinuations due to AE266 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeBleeding AEs281 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeDeaths91 Participants
Apixaban, 2.5 or 5 mg Twice DailyNumber of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeAEs1833 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeDeaths115 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeAEs1925 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeSAEs804 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeBleeding AEs259 Participants
Acetylsalicylic Acid, 81-324 mg Once DailyNumber of Participants With Serious Adverse Events (SAEs), Adverse Events (AEs), Bleeding AEs, Discontinuations Due to AEs, and Death as OutcomeDiscontinuations due to AE362 Participants
Secondary

Rate of Unrefuted Bleeding From First Dose of Double-blind Study Drug to First Occurence of Unrefuted Bleeding During the Double-blind Treatment Period

Event rate=percent of participants with an event divided by the total participants in the arm.

Time frame: Day 1 to first bleeding event up to efficacy cutoff date of May 28, 2010 (date revised following cessation of study for superior efficacy)

Population: Participants who received at least 1 dose of study drug.

ArmMeasureValue (NUMBER)
Apixaban, 2.5 or 5 mg Twice DailyRate of Unrefuted Bleeding From First Dose of Double-blind Study Drug to First Occurence of Unrefuted Bleeding During the Double-blind Treatment Period10.85 Percentage of events per year
Acetylsalicylic Acid, 81-324 mg Once DailyRate of Unrefuted Bleeding From First Dose of Double-blind Study Drug to First Occurence of Unrefuted Bleeding During the Double-blind Treatment Period8.32 Percentage of events per year
p-value: 0.001795% CI: [1.1, 1.53]Log Rank

Source: ClinicalTrials.gov · Data processed: Mar 29, 2026