饮茶与脑卒中关系的研究

A study on the association between tea consumption and stroke

目的 探讨饮茶与脑卒中的关系。方法 利用1998年秋季所获得的全国12个省、市、自治区15组人群心血管病及危险因素的横断面调查资料,以各项资料均完整者共14212人作为分析对象。结果 调整其他脑卒中危险因素后,饮茶者与不饮茶者相比,脑卒中的OR值是0.60(95％CI:0.42～0.85)。饮茶剂量与脑卒中危险呈一定的剂量反应关系,与不饮茶者相比,每月饮茶>150g,脑卒中的OR值是0.56(95％CI:0.36～0.89),每月饮茶量<150g者与脑卒中的关联不具有统计学意义。结论 饮茶与脑卒中患病间存在独立的负相关关系,多饮茶可能具有预防脑卒中的作用。

Objective The aim of the study was to investigate the association between tea consumption and stroke. Methods A cross sectional study was conducted in autumn, 1998. The subjects were from 12 provinces in China. 15 groups of populations were selected by cluster randomized sampling and each group had about 1000 persons, aged from 35 to 60 years old. 14 212 subjects had complete data for analysis. Data regarding tea drinking would include drinking status, dose and type of teas. Logistic regression was used to analyze the association between tea consumption and stroke. Results There was a strong inverse correlation between tea drinking and stroke after adjusting other risk factors of stroke (P<0.05). The odds ratio (OR) of stroke was 0.60 [95% confidence interval(CI): 0.42-0.85] for subjectswho drank tea compared to those who did not. Increased amount of tea consumption per month was associated with decreased stroke prevalence. The association for tea consumption over 150 gram per month and stroke was statistically significant (P<0.05) with an OR value of 0.56 (95%CI: 0.36-0.89). Analytical results indicated that the OR value was 0.24 (95% CI:0.06-1.01) for black tea and other tea (P=0.05).The OR value was 0.35(95% CI:0.18-0.72) for green tea (P<0.01), and 0.75(95% CI: 0.51-1.11) for jasmine tea (P>05). Conclusion Tea drinking was independently associated with prevalence of stroke which might play a role in the prevention of the disease.