Observational studyJournal of thrombosis and thrombolysis2019
Outcomes associated with under-dosing of rivaroxaban for management of non-valvular atrial fibrillation in real-world Japanese clinical settings.
Observational study in Journal of thrombosis and thrombolysis, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers, 11 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
31 citing papers in PubMed, 11 syntheses or guidelines pooled it.
- Clinical outcomes of off-label DOAC underdosing in Japanese patients with atrial fibrillation: a systematic review and meta-analysis.Journal of thrombosis and thrombolysis · 2025Pooled it
- Pooled it
- Residual Stroke Risk Among Patients With Atrial Fibrillation Prescribed Oral Anticoagulants: A Patient-Level Meta-Analysis From COMBINE AF.Journal of the American Heart Association · 2024Pooled it
- Comparisons of effectiveness and safety between on-label dosing, off-label underdosing, and off-label overdosing in Asian and non-Asian atrial fibrillation patients treated with rivaroxaban: a systematic review and meta-analysis of observational studies.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2023Pooled it
- Pooled it
- Outcomes and drivers of inappropriate dosing of non-vitamin K antagonist oral anticoagulants (NOACs) in patients with atrial fibrillation: a systematic review and meta-analysis.Heart (British Cardiac Society) · 2023Pooled it
- Efficacy and Safety of Clinically Driven Low-Dose Treatment with Direct Oral Anticoagulants in Asians with Atrial Fibrillation: a Systematic Review and Meta-analysis.Cardiovascular drugs and therapy · 2022Pooled it
- Effect of non-recommended doses versus recommended doses of direct oral anticoagulants in atrial fibrillation patients: A meta-analysis.Clinical cardiology · 2021Pooled it
- Efficacy and Safety of Non-recommended Dose of New Oral Anticoagulants in Patients With Atrial Fibrillation: A Systematic Review and Meta-Analysis.Frontiers in cardiovascular medicine · 2021Pooled it
- Off-Label Underdosing or Overdosing of Non-vitamin K Antagonist Oral Anticoagulants in Patients With Atrial Fibrillation: A Meta-Analysis.Frontiers in cardiovascular medicine · 2021Pooled it
- An Updated Pooled Analysis of Off-Label Under and Over-Dosed Direct Oral Anticoagulants in Patients with Atrial Fibrillation.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/HemostasisPooled it
- Rivaroxaban Underdose for Atrial Fibrillation with Stable Coronary Disease: The AFIRE Trial Findings.Thrombosis and haemostasis · 2022Trial
- Clinical characteristics, adherence to anticoagulation therapy and prognosis in patients with atrial fibrillation: a real-life study.BMC cardiovascular disorders · 2025Observational
- Outcomes of 10 mg Rivaroxaban in Nonvalvular Atrial Fibrillation Patients With CrCl ≥ 50 mL/min: A Retrospective Cohort Study.Cardiovascular therapeutics · 2025Article
- Understanding Antithrombotic Agents for Rehabilitation Therapy: A Comprehensive Narrative Review.Cureus · 2024Review
- Direct Oral Anticoagulant Dosing in Patients With Atrial Fibrillation: An Asian Perspective.JACC. Asia · 2023Review
- Safety and Efficacy Re-Evaluation of Edoxaban and Rivaroxaban Dosing With Plasma Concentration Monitoring in Non-Valvular Atrial Fibrillation: With Observations of On-Label and Off-Label Dosing.Circulation reports · 2023Article
- Safety of off-label dose reduction of non-vitamin K antagonist oral anticoagulants in patients with atrial fibrillation.British journal of clinical pharmacology · 2023Article
- Article
- Article
Corrections and comments
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Authors and funding
13 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The approved dose of oral anticoagulant rivaroxaban for patients with non-valvular atrial fibrillation (NVAF) in Japan is 15 mg once daily (od) in patients whose creatinine clearance is ≥ 50 mL/min, but recent real-world studies have demonstrated that these patients often received less than the recommended dose due to bleeding concerns. The effect of under-dosing on safety and effectiveness outcomes remains unclear. We used 1-year follow-up data from the XAPASS, a real-world Japanese prospective, single-arm, observational study. Of the 11,308 patients, 6521 patients who completed a 1-year follow-up and had a creatinine clearance ≥ 50 mL/min were included in this sub-analysis. Primary endpoints were any bleeding and a composite of stroke/non-central nervous system systemic embolism (non-CNS SE)/myocardial infarction (MI). Among the 6521 patients, 4185 (64.2%; mean CHADS
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