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为了解社区健康知识的传播渠道以及居民对高血压、脑卒中相关因素的知晓情况 ,1998年 4～ 6月对上海市 8个街道的居民进行了入户问卷调查。1 资料与方法1 1 采用两步抽样法对 8个街道进行调查。第 1步整群抽样 :各街道随机抽取 3～ 10个里委做为调查点 ;第 2步单纯随机抽样
In order to understand the distribution channels of community health knowledge and residents’ awareness of hypertension and stroke related factors, a questionnaire survey was conducted on residents of eight streets in Shanghai from April to June 1998. 1 Materials and Methods 1 1 Two-step sampling was used to investigate eight streets. Step 1 Cluster sampling: 3-10 random committees are randomly selected from each street as survey sites;