Skip to main content
OpenTrials
Completed

NCT Number: NCT03254134

Comparative Effectiveness and Safety Between Warfarin and Dabigatran

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.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Atrial Fibrillation Arrhythmias, Cardiac Cardiovascular Diseases Heart Diseases Pathologic Processes Pathological Conditions, Signs and Symptoms

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Nippon Boehringer Ingelheim Co., Ltd.

Tokyo, Japan

About this study

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.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

Warfarin

Drug

patients treated with warfarin

dabigatran

Drug

patients treated with Dabigatran

Other names: PRADAXA

Primary outcomes

  1. 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).

Secondary outcomes

  1. 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.

Sponsors and collaborators

Lead sponsor

Boehringer Ingelheim

Industry

Registry information

Official study title

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

Important dates

Study start
2017
Primary completion
2017
Study completion
2017
First posted
Aug 18, 2017
Registry last updated
Jul 9, 2019

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.