151. Comparative Effectiveness and Safety of Standard or Reduced Dose Dabigatran vs. Rivaroxaban in Nonvalvular Atrial Fibrillation.
- Author
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Blin P, Dureau-Pournin C, Cottin Y, Bénichou J, Mismetti P, Abouelfath A, Lassalle R, Droz C, and Moore N
- Subjects
- Adult, Aged, Aged, 80 and over, Atrial Fibrillation diagnosis, Cohort Studies, Dabigatran adverse effects, Databases, Factual trends, Dose-Response Relationship, Drug, Factor Xa Inhibitors adverse effects, Female, Follow-Up Studies, Humans, Male, Middle Aged, Mortality trends, Rivaroxaban adverse effects, Treatment Outcome, Young Adult, Atrial Fibrillation drug therapy, Atrial Fibrillation mortality, Dabigatran administration & dosage, Factor Xa Inhibitors administration & dosage, Rivaroxaban administration & dosage
- Abstract
Dabigatran and rivaroxaban at standard or reduced doses have been compared to warfarin in nonvalvular atrial fibrillation (NVAF), but not to each other. This was a new user study of standard dose and reduced dose dabigatran or rivaroxaban for NVAF in the French healthcare database, matched on gender, age, date of first dispensing, and high-dimensional propensity score, followed 2 years. Hazard ratios (HRs; 95% confidence intervals (CI)) of stroke or systemic embolism (SSE), major bleeding (MB), or death were computed. In matched standard-dose patients (8,290 per arm), mean age 67 years, HRs for dabigatran vs. rivaroxaban were SSE 0.92 (95% CI = 0.67-1.26), MB 0.59 (95% CI = 0.39-0.90), and death 0.84 (95% CI = 0.65-1.11). In reduced-dose patients (7,639 per arm), mean age 80 years, HRs for dabigatran vs. rivaroxaban were SSE 0.73 (95% CI = 0.59-0.94), MB 0.74 (95% CI = 0.57-0.96), and death 0.95 (95% CI = 0.83-1.09). In conclusion, at either dose, dabigatran had similar or better effectiveness than rivaroxaban but lower bleeding risk. Death rates were not different., (© 2018 The Authors Clinical Pharmacology & Therapeutics © 2018 American Society for Clinical Pharmacology and Therapeutics.)
- Published
- 2019
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