1. Sex Differences in Disease Profiles, Management, and Outcomes Among People with Atrial Fibrillation After Ischemic Stroke: Aggregated and Individual Participant Data Meta-Analyses
- Author
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Wang, Xia Phan, Hoang T. Li, Jingwei Reeves, Mathew J. Thrift, Amanda G. Cadilhac, Dominique A. Sturm, Jonathan Konstantinos, Vemmos Parmar, Priya Krishnamurthi, Rita Barker-Collo, Suzanne Feigin, Valery Cabral, Norberto L. Carolei, Antonio Marini, Carmine Sacco, Simona Correia, Manuel Appelros, Peter Kõrv, Janika Vibo, Riina Yang, Sook Ching Carcel, Cheryl Woodward, Mark Sandset, Else Charlotte Anderson, Craig Gall, Seana
- Abstract
Objectives: To examine sex differences in disease profiles, management, and survival at 1 and 5 years after ischemic stroke (IS) among people with atrial fibrillation (AF). Methods: We performed a systematic literature search of reports of AF at IS onset according to sex. We undertook an individual participant data meta-analysis (IPDMA) of nine population-based stroke incidence studies conducted in Australasia, Europe, and South America (1993-2014). Poisson regression was used to estimate women:men mortality rate ratios (MRRs). Study-specific MRRs were combined using random effects meta-analysis. Results: In our meta-analysis based on aggregated data from 101 studies, the pooled AF prevalence was 23\% (95\% confidence interval [CI]: 22\%-25\%) in women and 17\% (15\%-18\%) in men. Our IPDMA is of 1,862 IS-AF cases, with women (79.2 ± 9.1, years) being older than men (76.5 ± 9.5, years). Crude pooled mortality rate was greater for women than for men (1-year MRR 1.24; 1.01-1.51; 5-year 1.12; 1.03-1.22). However, the sex difference was greatly attenuated after accounting for age, prestroke function, and stroke severity (1-year 1.09; 0.97-1.22; 5-year 0.98; 0.84-1.16). Women were less likely to have anticoagulant prescription at discharge (odds ratio [OR] 0.94; 95\% CI: 0.89-0.98) than men when pooling IPDMA and aggregated data. Conclusions: AF was more prevalent after IS among women than among men. Among IS-AF cases, women were less likely to receive anticoagulant agents at discharge; however, greater mortality rate in women was mostly attributable to prestroke factors. Further information needs to be collected in population-based studies to understand the reasons for lower treatment of AF in women.
- Published
- 2020