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A Study to Learn About the Use of Paxlovid in Patients With COVID-19 in the Kingdom of Bahrain.

A Retrospective Observational Non-Interventional Study (NIS) to Assess Patient Characteristics and Healthcare Resource Use (HRU) Among COVID-19 Patients With or Without Nirmatrelvir/Ritonavir (PAXLOVID™) Treatment in the Kingdom of Bahrain.

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT06291831
Enrollment
3011
Registered
2024-03-04
Start date
2024-03-13
Completion date
2024-05-14
Last updated
2025-08-19

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

Conditions

COVID-19

Keywords

COVID-19 patients, Paxlovid use, Bahrain

Brief summary

The purpose of this study is to collect information on the: * general information of a group of people such as their age, sex * clinical information of the patients such as any other illness before having COVID 19. * the number of COVID-19 patients who meet and follow the most up to date World Health Organization (WHO) recommendations for medication to treat COVID-19 (such as version 14, published 10Nov2023) compared to Kingdom of Bahrain national recommendations * adult COVID-19 patients' health care resource use and outcomes within the 28-day period In adult patients with COVID-19 who have been prescribed nirmatrelvir and ritonavir treatment. This study will be conducted in the Kingdom of Bahrain. The study will capture information of the adult COVID-19 outpatients and inpatients who have been prescribed nirmatrelvir, ritonavir treatment and those not treated with nirmatrelvir, ritonavir. This study will have about 3000 patients treated with Paxlovid™ therapy and 1000 were not. The study will involve collection of patient information from medical records. The information collected can be either from papers or from computers. The study will include patient information of those who: * had COVID-19 infection during the study period from 16 February 2022 to 30 November 2022. * are 18 years of age or older. This study will help to inform decision-making on use of Paxlovid at the national level.

Interventions

Patients receiving Nirmatrelvir; Ritonavir (PAXLOVID)

OTHERControls

Patients who do not receive Nirmatrevir/ritonavir (Paxlovid)

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

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

Inclusion criteria

Patients must meet all of the following inclusion criteria to be eligible for inclusion in the study:Age 18 years and older Patients with a diagnosis of COVID-19 whose information can be extracted from the I-Seha database

Exclusion criteria

There are no

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants Who Used AntibioticsUp to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study
Number of Participants Classified Based on EducationBaseline; from available retrospective data evaluated during 2 months of this studyBaseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.
Number of Participants Classified Based on Employment StatusBaseline; from available retrospective data evaluated during 2 months of this studyBaseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.
HeightBaseline; from available retrospective data evaluated during 2 months of this studyBaseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.
WeightBaseline; from available retrospective data evaluated during 2 months of this studyBaseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.
Body Mass Index (BMI)Baseline; from available retrospective data evaluated during 2 months of this studyBaseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.
Number of Participants Classified Based on Smoking StatusBaseline; from available retrospective data evaluated during 2 months of this studyBaseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.
Number of Participants With at Least 1 Pre-existing ComorbiditiesBaseline; from available retrospective data evaluated during 2 months of this studyPre-existing comorbidities included: asthma, emphysema, chronic obstructive pulmonary disease (COPD), hypertension, diabetes, obesity, cerebrovascular disease, neurological disease, chronic kidney disease, chronic liver disease, malignancy. Baseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.
Number of Participants Who Took at Least 1 Concomitant Medications for Pre-existing ComorbiditiesBaseline; from available retrospective data evaluated during 2 months of this studyBaseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.

Secondary

MeasureTime frame
Number of Participants With Hospitalization for Any CauseUp to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study
Number of Participants With Intensive Care Unit (ICU) Admission for Any CauseUp to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study
Number of Participants Classified According to Length of Stay (LOS) in ICU for Any CauseUp to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study
Number of Participants With Emergency Room (ER) Visits for Any CauseUp to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study
Number of Participants With Supplemental Oxygen UsageUp to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study
Number of Participants With Vasopressor UseUp to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study
Number of Participants Who Used Invasive Mechanical Ventilation (IMV)Up to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study
Number of Participants With Yes/no Questionnaire on Outpatient VisitsUp to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study

Countries

Bahrain

Participant flow

Recruitment details

Data of eligible participants diagnosed with corona virus disease 2019 (COVID-19) in the Kingdom of Bahrain who were offered Paxlovid (nirmatrelvir, ritonavir) treatment between 16 February 2022 to 30 November 2022 (9.5 months) was included in this retrospective observational study. Data was retrieved from Kingdom of Bahrain national health information system \[(I-Seha electronic health records (EHR)\].

Pre-assignment details

Available retrospective data was evaluated per objectives of this study in 2 months of this study (study start date: 13-Mar-2024 to study completion date: 14-May-2024).

Participants by arm

ArmCount
Treated With Paxlovid
Participants who were diagnosed with COVID-19 and accepted offer for treatment with Paxlovid (nirmatrelvir, ritonavir) treatment in real world setting. No intervention was administered under this study.
2,005
Not Treated With Paxlovid
Participants who were diagnosed with COVID-19 and declined offer for treatment with Paxlovid (nirmatrelvir, ritonavir) treatment. This reporting arm served as control group.
1,006
Total3,011

Baseline characteristics

CharacteristicTreated With PaxlovidNot Treated With PaxlovidTotal
Age, Customized
Age
12-17 Years
2 Participants0 Participants2 Participants
Age, Customized
Age
18-29 Years
457 Participants204 Participants661 Participants
Age, Customized
Age
30-49 Years
453 Participants208 Participants661 Participants
Age, Customized
Age
50-64 Years
485 Participants201 Participants686 Participants
Age, Customized
Age
65-74 Years
459 Participants189 Participants648 Participants
Age, Customized
Age
Greater than equal to 75 Years
149 Participants204 Participants353 Participants
Race/Ethnicity, Customized
Ethnicity
Arab
1,668 Participants916 Participants2584 Participants
Race/Ethnicity, Customized
Ethnicity
Asian
291 Participants79 Participants370 Participants
Race/Ethnicity, Customized
Ethnicity
Black/African/Caribbean
8 Participants3 Participants11 Participants
Race/Ethnicity, Customized
Ethnicity
Mixed/Multiple Ethnic Groups
16 Participants3 Participants19 Participants
Race/Ethnicity, Customized
Ethnicity
Persian
1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Ethnicity
White
21 Participants5 Participants26 Participants
Sex: Female, Male
Female
1,005 Participants489 Participants1494 Participants
Sex: Female, Male
Male
1000 Participants517 Participants1517 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 2,0050 / 1,006
other
Total, other adverse events
1,427 / 2,0050 / 0
serious
Total, serious adverse events
0 / 2,0050 / 0

Outcome results

Primary

Body Mass Index (BMI)

Baseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.

Time frame: Baseline; from available retrospective data evaluated during 2 months of this study

Population: Analysis population included all eligible participants whose data were included and observed in this study. BMI was extracted from records and method how it was collected originally was not known.

ArmMeasureValue (MEDIAN)
Treated With PaxlovidBody Mass Index (BMI)29 Kilogram over meter square (Kg/m^2)
Not Treated With PaxlovidBody Mass Index (BMI)29 Kilogram over meter square (Kg/m^2)
Primary

Height

Baseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.

Time frame: Baseline; from available retrospective data evaluated during 2 months of this study

Population: I-Seha EHR was used to retrieve the data in this study for evaluation of its objectives. Height information required for this outcome measure was not available in I-Seha EHR. Hence, there was no data that could be analyzed for this outcome measure.

Primary

Number of Participants Classified Based on Education

Baseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.

Time frame: Baseline; from available retrospective data evaluated during 2 months of this study

Population: I-Seha EHR was used to retrieve the data in this study for evaluation of its objectives. Education information required for this outcome measure was not available in I-Seha EHR. Hence, there was no data that could be analyzed for this outcome measure.

Primary

Number of Participants Classified Based on Employment Status

Baseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.

Time frame: Baseline; from available retrospective data evaluated during 2 months of this study

Population: I-Seha EHR was used to retrieve the data in this study for evaluation of its objectives. Employment status information required for this outcome measure was not available in I-Seha EHR. Hence, there was no data that could be analyzed for this outcome measure.

Primary

Number of Participants Classified Based on Smoking Status

Baseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.

Time frame: Baseline; from available retrospective data evaluated during 2 months of this study

Population: I-Seha EHR was used to retrieve the data in this study for evaluation of its objectives. Smoking status information required for this outcome measure was not available in I-Seha EHR. Hence, there was no data that could be analyzed for this outcome measure.

Primary

Number of Participants Who Took at Least 1 Concomitant Medications for Pre-existing Comorbidities

Baseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.

Time frame: Baseline; from available retrospective data evaluated during 2 months of this study

Population: I-Seha EHR was used to retrieve the data in this study for evaluation of its objectives. Concomitant medications for pre-existing comorbidities information required for this outcome measure was not available in I-Seha EHR. Hence, there was no data that could be analyzed for this outcome measure.

Primary

Number of Participants Who Used Antibiotics

Time frame: Up to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study

Population: Analysis population included all eligible participants whose data were included and observed in this study.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Treated With PaxlovidNumber of Participants Who Used AntibioticsFor any cause530 Participants
Treated With PaxlovidNumber of Participants Who Used AntibioticsFor COVID-19118 Participants
Not Treated With PaxlovidNumber of Participants Who Used AntibioticsFor any cause320 Participants
Not Treated With PaxlovidNumber of Participants Who Used AntibioticsFor COVID-19103 Participants
Primary

Number of Participants With at Least 1 Pre-existing Comorbidities

Pre-existing comorbidities included: asthma, emphysema, chronic obstructive pulmonary disease (COPD), hypertension, diabetes, obesity, cerebrovascular disease, neurological disease, chronic kidney disease, chronic liver disease, malignancy. Baseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.

Time frame: Baseline; from available retrospective data evaluated during 2 months of this study

Population: Analysis population included all eligible participants whose data were included and observed in this study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treated With PaxlovidNumber of Participants With at Least 1 Pre-existing Comorbidities1709 Participants
Not Treated With PaxlovidNumber of Participants With at Least 1 Pre-existing Comorbidities920 Participants
Primary

Weight

Baseline was defined as one year before the index date. Index date was Paxlovid prescription written date or dispense date; if neither of them were available, the COVID-19 diagnosis date was used as the index date.

Time frame: Baseline; from available retrospective data evaluated during 2 months of this study

Population: I-Seha EHR was used to retrieve the data in this study for evaluation of its objectives. Weight information required for this outcome measure was not available in I-Seha EHR. Hence, there was no data that could be analyzed for this outcome measure.

Secondary

Number of Participants Classified According to Length of Stay (LOS) in ICU for Any Cause

Time frame: Up to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study

Population: Analysis population included all eligible participants whose data were included and observed in this study. Here Overall Number of Participants Analyzed signifies the number of participants evaluable for this outcome measure.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Treated With PaxlovidNumber of Participants Classified According to Length of Stay (LOS) in ICU for Any Cause6 Days1 Participants
Treated With PaxlovidNumber of Participants Classified According to Length of Stay (LOS) in ICU for Any Cause3 Days0 Participants
Treated With PaxlovidNumber of Participants Classified According to Length of Stay (LOS) in ICU for Any CauseMissing2 Participants
Not Treated With PaxlovidNumber of Participants Classified According to Length of Stay (LOS) in ICU for Any Cause3 Days1 Participants
Not Treated With PaxlovidNumber of Participants Classified According to Length of Stay (LOS) in ICU for Any Cause6 Days0 Participants
Not Treated With PaxlovidNumber of Participants Classified According to Length of Stay (LOS) in ICU for Any CauseMissing0 Participants
Secondary

Number of Participants Who Used Invasive Mechanical Ventilation (IMV)

Time frame: Up to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study

Population: Analysis population included all eligible participants whose data were included and observed in this study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treated With PaxlovidNumber of Participants Who Used Invasive Mechanical Ventilation (IMV)0 Participants
Not Treated With PaxlovidNumber of Participants Who Used Invasive Mechanical Ventilation (IMV)1 Participants
Secondary

Number of Participants With Emergency Room (ER) Visits for Any Cause

Time frame: Up to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study

Population: Analysis population included all eligible participants whose data were included and observed in this study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treated With PaxlovidNumber of Participants With Emergency Room (ER) Visits for Any Cause298 Participants
Not Treated With PaxlovidNumber of Participants With Emergency Room (ER) Visits for Any Cause155 Participants
Secondary

Number of Participants With Hospitalization for Any Cause

Time frame: Up to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study

Population: Analysis population included all eligible participants whose data were included and observed in this study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treated With PaxlovidNumber of Participants With Hospitalization for Any Cause137 Participants
Not Treated With PaxlovidNumber of Participants With Hospitalization for Any Cause123 Participants
Secondary

Number of Participants With Intensive Care Unit (ICU) Admission for Any Cause

Time frame: Up to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study

Population: Analysis population included all eligible participants whose data were included and observed in this study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treated With PaxlovidNumber of Participants With Intensive Care Unit (ICU) Admission for Any Cause3 Participants
Not Treated With PaxlovidNumber of Participants With Intensive Care Unit (ICU) Admission for Any Cause1 Participants
Secondary

Number of Participants With Supplemental Oxygen Usage

Time frame: Up to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study

Population: Analysis population included all eligible participants whose data were included and observed in this study.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Treated With PaxlovidNumber of Participants With Supplemental Oxygen Usage21 Participants
Not Treated With PaxlovidNumber of Participants With Supplemental Oxygen Usage11 Participants
Secondary

Number of Participants With Vasopressor Use

Time frame: Up to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study

Population: I-Seha EHR was used to retrieve the data in this study for evaluation of its objectives. Participants with vasopressor use information required for this outcome measure was not available in I-Seha EHR. Hence, there was no data that could be analyzed for this outcome measure.

Secondary

Number of Participants With Yes/no Questionnaire on Outpatient Visits

Time frame: Up to 24 months following COVID-19 diagnosis; from available retrospective data evaluated during 2 months of this study

Population: I-Seha EHR was used to retrieve the data in this study for evaluation of its objectives. Participants with yes/no questionnaire on outpatient visits information required for this outcome measure was not available in I-Seha EHR. Hence, there was no data that could be analyzed for this outcome measure.

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026