Cross-section study on effect of smoking, drinking and other risk factors on stroke and its subtypes in elders

  Objective   To study the relationship of smoking, drinking and other risk factors with stroke and its subtypes in elders in Beijing, China.

  Methods   The sutdy was a cross-section study including 2 096 old people in a community in Beijing by means of cluster sampling. Trained investigators finished the question-papers by face to face investigation and SPSS 1115 was used to analyze the data. There were 2 096 subjects.

  Results   In univariate analyses, age, hypertension, course of hypertension, smoking, coronary heart disease, diabetes mellitus, hyperglycemia、HDL and the family history of stroke were risk factors to strok (P < 0.05). Smoking increased the risk of total stroke, OR(95% CI)=1.17(1.01-1.35), while drinking decreased the risk of total stroke and ischemic stroke in the male, 0.69(0.51-0.94) and 0.71(0.52-0.98) respectively. Multivariate analyses showed after adjusting for potential confounders(body mass index, passive smoking, history of coronary heart disease, diabetes mellitus, hyperlipemia and heart disease etc), hypertension increased the risk of ischemic, hemorrhagic and total stroke and smoking increased the risk of total stroke and hemorrhagic stroke, 1.19(1.02-1.39)and 1.53 (1.03-2.27) respectively, while drinking still decreased the risk of total stroke (OR=0.78, 95% CI=0.61 to 0.99).

  Conclusion   Smoking was the risk factor to ischemic and total stroke, while moderate drinking reduced the risk.