Comparison of Bleeding Risk Between Rivaroxaban and Apixaban for the Treatment of Acute Venous Thromboembolism (COBRRA)
Sponsor: Canadian Institutes of Health Research (CIHR)
Listed as NCT03266783, this PHASE4 trial focuses on Venous Thromboembolism and remains completed. Sponsored by Canadian Institutes of Health Research (CIHR), it has been updated 24 times since 2017, reflecting substantial change activity. This study adds to the evidence base for this therapeutic area through structured, versioned documentation.
Status Flow
Change History
24 versions recorded-
Dec 2025 — Present [monthly]
Completed PHASE4
Status: Active Not Recruiting → Completed
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Sep 2025 — Dec 2025 [monthly]
Active Not Recruiting PHASE4
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Aug 2025 — Sep 2025 [monthly]
Active Not Recruiting PHASE4
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May 2025 — Aug 2025 [monthly]
Active Not Recruiting PHASE4
Status: Recruiting → Active Not Recruiting
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Nov 2024 — May 2025 [monthly]
Recruiting PHASE4
▶ Show 19 earlier versions
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Sep 2024 — Nov 2024 [monthly]
Recruiting PHASE4
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Jul 2024 — Sep 2024 [monthly]
Recruiting PHASE4
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May 2024 — Jul 2024 [monthly]
Recruiting PHASE4
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Nov 2023 — May 2024 [monthly]
Recruiting PHASE4
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May 2023 — Nov 2023 [monthly]
Recruiting PHASE4
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Apr 2022 — May 2023 [monthly]
Recruiting PHASE4
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Dec 2021 — Apr 2022 [monthly]
Recruiting PHASE4
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Feb 2021 — Dec 2021 [monthly]
Recruiting PHASE4
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Jan 2021 — Feb 2021 [monthly]
Recruiting PHASE4
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Sep 2020 — Jan 2021 [monthly]
Recruiting PHASE4
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Apr 2020 — Sep 2020 [monthly]
Recruiting PHASE4
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Dec 2019 — Apr 2020 [monthly]
Recruiting PHASE4
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Nov 2019 — Dec 2019 [monthly]
Recruiting PHASE4
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May 2019 — Nov 2019 [monthly]
Recruiting PHASE4
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Jan 2019 — May 2019 [monthly]
Recruiting PHASE4
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Aug 2018 — Jan 2019 [monthly]
Recruiting PHASE4
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Jun 2018 — Aug 2018 [monthly]
Recruiting PHASE4
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Jan 2018 — Jun 2018 [monthly]
Recruiting PHASE4
Status: Not Yet Recruiting → Recruiting
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Sep 2017 — Jan 2018 [monthly]
Not Yet Recruiting PHASE4
First recorded
Eligibility Summary
No eligibility information available.
Contact Information
- Canadian Institutes of Health Research (CIHR)
- Canadian Venous Thromboembolism Clinical Trials and Outcomes Research (CanVECTOR) Network
- Ottawa Hospital Research Institute
For direct contact, visit the study record on ClinicalTrials.gov .
Study Locations
Calgary, Canada , Darlington, Australia , Dublin, Ireland , Edmonton, Canada , Halifax, Canada , Hamilton, Canada , Kingston, Canada , London, Canada , Montreal, Canada , Ottawa, Canada and 4 more locations