Direct oral anticoagulants for stroke prevention in patients with atrial fibrillation: meta-analysis by geographic region with a focus on European patients.
Br J Clin Pharmacol
; 82(3): 633-44, 2016 09.
Article
en En
| MEDLINE
| ID: mdl-27161800
ABSTRACT
AIMS:
To analyse clinical outcomes with direct oral anticoagulants in patients with atrial fibrillation according to geographic region.METHODS:
We systematically searched MEDLINE, CENTRAL, websites of regulatory agencies, clinical trials registers and conference proceedings for randomized controlled trials of direct oral anticoagulants (DOAC dabigatran, rivaroxaban, apixaban or edoxaban) against warfarin for prophylaxis of stroke and systemic embolic events (SEE) in patients with atrial fibrillation (AF). Two investigators independently extracted data. Relative risks of stroke and SEE as well as major bleeding depending on geographic region were estimated using a random effect meta-analysis.RESULTS:
Five trials in 72 963 patients were analysed; 32 089 (44%) patients were recruited in Europe (Western Europe 13 676; Eastern Europe 18 413). We found significant subgroup differences for stroke/SEE depending on the geographic region (interaction P = 0.003; I(2) 88.5%), with a neutral effect of the DOAC vs. warfarin in Europe [relative risk (RR) 0.97, 95% confidence interval (CI) 0.85-1.11, I(2) 0%] and a significant reduction of stroke/SEE in other regions including North America, Latin America and Asia-Pacific/other (RR 0.72, 95% CI 0.63-0.83, I(2) 33%). There was a similar reduction in risk of major bleeding in Europe (RR 0.82, 95% CI 0.73-0.92, I(2) 0%) and in other regions (RR 0.86, 95% CI 0.72-1.02, I(2) 78%).CONCLUSION:
The DOAC did not provide additional benefit in reducing the risk of stroke/SEE compared with warfarin in European patients with AF, but were generally associated with a lower bleeding tendency than warfarin regardless of geographic region.Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Fibrilación Atrial
/
Accidente Cerebrovascular
/
Anticoagulantes
Tipo de estudio:
Clinical_trials
/
Etiology_studies
/
Systematic_reviews
País/Región como asunto:
America do norte
/
Asia
/
Europa
/
Oceania
Idioma:
En
Revista:
Br J Clin Pharmacol
Año:
2016
Tipo del documento:
Article