Comparative Effectiveness and Safety Between Warfarin and Dabigatran

July 4, 2019 updated by: Boehringer Ingelheim

Comparative Effectiveness and Safety Between Warfarin and Dabigatran Using Real World Claims Data of Japanese Non-valvular Atrial Fibrillation Patients

This is a comparative effectiveness and safety study of clinical events among patients taking either dabigatran or warfarin. There is no formal hypothesis to be tested, but rather to provide the estimates on the incidence of stroke and systemic embolism (effectiveness) and bleeding events (safety) using 95% confidence interval for comparison between those non0-valvular atrial fibrillation patients taking dabigatran vs. warfarin using a large, nation-wide claims data in Japan.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This is a comparative effectiveness and safety study of clinical events among patients taking either dabigatran or warfarin. There is no formal hypothesis to be tested, but rather to provide the estimates on the incidence of stroke and systemic embolism (effectiveness) and bleeding events (safety) using 95% confidence interval for comparison between those non-valvular atrial fibrillation patients taking dabigatran vs. warfarin using a large, nation-wide claims data in Japan.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
22490

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Japan
      • Tokyo, Japan
        • Nippon Boehringer Ingelheim Co., Ltd.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Any patients with atrial fibrillation contained in the Medical Data Vision (MDVI) database which is a Japanese, nationwide claims data containing approximately 16 million patients cumulatively. The data cut is between March 2011 to June 2016, and the patients in the MDV database are those who have visited DPC hospitals (diagnostic procedure combination, a lump-sum payment system based on disease diagnosis to be treated similar to Medicare/Medicaid in the USA) hospitals which provide acute in-patient, as well as outpatient care.

Description

Inclusion Criteria:

  • patients aged >18 year-old with confirmed diagnosis of Non-Valvular Atrial Fibrillation (NVAF) (ICD 10 code I48)
  • having a first prescription (index date) of either dabigatran or warfarin between 14 March 2011 to 30 June 2016
  • having no prescription of any Oral Anticoagulants (OACs) for 12 months prior to the index date (this period is defined as the baseline period)

Exclusion Criteria:

  • patients having less than 12 months of enrolment prior to the index date
  • being dialysis or kidney transplant recipients in baseline period
  • having either atrial flutter, valvular atrial fibrillation (AF)
  • mechanical valve placement, rheumatic AF
  • and/or mitral valve prolapse/regurge/stenosis in baseline period
  • having record of deep vein thrombosis or pulmonary embolism < 6 months before AF diagnosis in baseline period

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Atrial Fibrillation
patients with atrial fibrillation
Drug: Warfarin
patients treated with warfarin
Drug: Dabigatran
patients treated with Dabigatran
Other Names:
  • PRADAXA

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Incidence Rate of Stroke and Systemic Embolism (SE)
Time Frame: From the index date to end of treatment with > 14 day grace period, switch to another OAC, end of continuous enrolment, end of study period or death, outcome event of stroke and systemic embolism, ie., up to 6.5 years.
Incidence rate of stroke and systemic embolism (SE).
From the index date to end of treatment with > 14 day grace period, switch to another OAC, end of continuous enrolment, end of study period or death, outcome event of stroke and systemic embolism, ie., up to 6.5 years.

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Incidence Rate of Major Bleeding
Time Frame: From the index date to end of treatment with > 14 day grace period, switch to another OAC, end of continuous enrolment, end of study period or death, outcome event of major bleeding, ie., up to 6.5 years.
Incidence rate of major bleeding defined by any bleeding event associated with hospitalization claims and/or transfusion claims.
From the index date to end of treatment with > 14 day grace period, switch to another OAC, end of continuous enrolment, end of study period or death, outcome event of major bleeding, ie., up to 6.5 years.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Boehringer Ingelheim

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 20, 2017

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 30, 2017

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 3, 2017

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 17, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 17, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 18, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 9, 2019

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 4, 2019

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2019

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 1160-0288

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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