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Front Neurol. 2017 Apr 27;8:166. doi: 10.3389/fneur.2017.00166. eCollection 2017.

Sex Differences in Outcomes among Stroke Survivors with Non-Valvular Atrial Fibrillation in China.

Hong Y1,2, Yang X1,2, Zhao W1,2, Zhang X1,2, Zhao J1,2, Yang Y1,2, Ning X3,4, Wang J3,4, An Z1,2.

Author information

1
Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China.
2
Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Disease, Tianjin, China.
3
Department of Epidemiology, Tianjin Neurological Institute, Tianjin, China.
4
Department of Neurology, Tianjin Medical University General Hospital, Tianjin, China.

Abstract

Atrial fibrillation (AF) significantly increases the risk of stroke and disease burden and is an established predictor of poor outcomes after stroke. However, data regarding sex differences in long-term outcomes following stroke in patients with AF are scarce. We thus aimed to assess these differences. We recruited 951 consecutive patients with acute ischemic stroke and non-valvular atrial fibrillation (NVAF) treated at three hospitals in Tianjin, China, from January 2006 to September 2014. Information regarding stroke subtype, severity, risk factors, and outcomes (mortality, dependency, and recurrence) at 3, 12, and 36 months after stroke was recorded. The prevalence of NVAF was 8.4% overall, with a higher frequency in women than in men (11.3 vs. 6.9%, P < 0.001). Among patients with NVAF, women were older than men. Women were more likely than men to have severe stroke (38.8 vs. 29.5%, P < 0.001), high levels of total cholesterol and high- and low-density lipoprotein cholesterol (all P < 0.001), hypertension (69.1 vs. 61.2%, P = 0.012), dyslipidemia (29.8 vs. 20.7%, P = 0.001), and obesity (18.5 vs. 11.6%, P = 0.003); they were less likely than men to be current smokers (12.2 vs. 33.6%, P < 0.001) and to consume alcohol (0.9 vs. 13.9%, P < 0.001). There were greater risks of dependency and recurrence at 36 months after stroke in women than in men [odds ratios (95% confidence intervals), 1.64 (1.02-2.64) for dependency, P = 0.043; and 2.03 (1.28-3.20) for recurrence, P = 0.002] after adjustment for stroke subtype, severity, and risk factors. These findings suggest that it is crucial to emphasize the need for individualized stroke prevention education and promotion of healthy lifestyles in order to improve NVAF-related stroke outcomes and reduce disease burden in women.

KEYWORDS:

China; acute ischemic stroke; non-valvular atrial fibrillation; outcome; risk factors; sex differences

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