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  • Title: Comparison of dabigatran, rivaroxaban, and apixaban for effectiveness and safety in atrial fibrillation: a nationwide cohort study.
    Author: Rutherford OW, Jonasson C, Ghanima W, Söderdahl F, Halvorsen S.
    Journal: Eur Heart J Cardiovasc Pharmacother; 2020 Apr 01; 6(2):75-85. PubMed ID: 31942972.
    Abstract:
    AIMS: The aim of this study was to compare the risk of stroke or systemic embolism (SE) and major bleeding in patients with atrial fibrillation (AF) using dabigatran, rivaroxaban, and apixaban in routine clinical practice. METHODS AND RESULTS: Using nationwide registries in Norway from January 2013 to December 2017, we established a cohort of 52 476 new users of non-vitamin K antagonist oral anticoagulants (NOACs) with AF. Users of individual NOACs were matched 1:1 on the propensity score to create three pairwise-matched cohorts: dabigatran vs. rivaroxaban (20 504 patients), dabigatran vs. apixaban (20 826 patients), and rivaroxaban vs. apixaban (27 398 patients). Hazard ratios (HRs) for the risk of stroke or SE and major bleeding were estimated. In the propensity-matched comparisons of the risk of stroke or SE, the HRs were 0.88 [95% confidence interval (CI) 0.76-1.02] for dabigatran vs. rivaroxaban, 0.88 (95% CI 0.75-1.02) for dabigatran vs. apixaban, and 1.00 (95% CI 0.89-1.14) for apixaban vs. rivaroxaban. For the risk of major bleeding, the HRs were 0.75 (95% CI 0.64-0.88) for dabigatran vs. rivaroxaban, 1.03 (95% CI 0.85-1.24) for dabigatran vs. apixaban, and 0.79 (95% CI 0.68-0.91) for apixaban vs. rivaroxaban. CONCLUSION: In this nationwide study of patients with AF in Norway, we found no statistically significant differences in risk of stroke or SE in propensity-matched comparisons between dabigatran, rivaroxaban, and apixaban. However, dabigatran and apixaban were both associated with significantly lower risk of major bleeding compared with rivaroxaban.
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