Sex Difference in the Incidence of Stroke and Its Corresponding Influence Factors: Results from a Follow-up 8.4 Years of Rural China Hypertensive Prospective Cohort Study
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Endocrinology
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Background: Few studies investigate sex difference in stroke incidence in rural China hypertensive population.
Methods: A total of 5097 hypertensive patients aged ≥35 years (mean age, 56.3 ± 11.2 years; 43.8% men) were included in our analysis with a median follow-up 8.4 years in Fuxin county of Liaoning province in China. Cox proportional hazard models were used to analyze the association between the potential factors and incident stroke.
Results: We observed 501 new strokes (310 ischemic, 186 hemorrhagic, and 5 unclassified stroke) during the follow-up. The overall incidence of stroke was 1235.21 per 100,000 person-years; for men, the rates were 1652.51 and 920.80 for women. This sex difference in all stroke can be explained by approximately 25% through age, systolic blood pressure, body mass index, low-density lipoprotein-cholesterol, current smoking, current drinking, antihypertensive drugs, education and physical activity. Subgroup analysis indicated that in hemorrhagic stroke this sex difference was more remarkable (63.89% can be explained).
Conclusions: The incidence of stroke was higher in men than that in women and this difference was partly explained by several traditional cardiovascular risk factors.
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