[A cross-sectional survey on prevalence of stroke and risk factors in middle-aged and elderly people in Beijing].

Objective: To investigate the prevalence of stroke and risk factors for stroke in middle-aged and elderly population in Beijing. Methods: A population based cross sectional survey was conducted among 19 145 subjects (males: 6 732; females: 12 413) aged ≥40 years from 3 communities in Shijingshan district of Beijing from November 2011 to August 2012. The information of subjects' demographic characteristics, lifestyle and histories of diabetes mellitus, hypertension and dyslipidemia were collected. The oral glucose tolerance test or a standard meal test was performed. Non-fatal stroke was reported by the subjects. Blood specimen were collected for detecting fasting blood glucose, TC, TG, HDL-C, LDL-C, HbA1c and 2-h blood glucose. Results: The overall prevalence of stroke was 3.3%, and the gender specific prevalence was 4.8% in males and 2.5% in females. The standardized prevalence based on 2010 population census data was 3.2%, 2.5% and 3.9%, respectively. The overall prevalence of smoking, overweight or obesity, hypertension, hyperglycemia and dyslipidemia was 45.2%, 60.4%, 52.7%, 51.5%, and 64.6% in males, respectively, and 2.2%, 55.1%, 42.2%, 45.6%, 67.4% in females, respectively. Conclusion: The prevalence of stroke was higher in males than in females in the middle aged and elderly people in Beijing. The smoking rate was significantly higher in males than in females. The prevalence of overweight or obesity, hypertension, and hyperglycemia were all higher in males than in females.