了解我市高血压的患病特点及危险因素 ,为制订防治对策提供科学依据 ,我们于 1998年 1月起 ,历时一年 ,开展了专题调查 ,现将结果报告如下。1　材料和方法1.1　调查方法　按地理位置和自然环境设 7个调查点 ,每个调查点采取整群抽样法 ,抽取若干个村 (居委会 ) ,进行问卷调查和 To understand the prevalence and risk factors of hypertension in our city and to provide a scientific basis for formulating prevention and control measures, we conducted a special survey in January 1998 starting from January 1998, and the results are reported as follows. 1 Materials and Methods 1.1 Methods of investigation According to the geographical location and the natural environment set up seven survey points, each survey point cluster sampling method, select a number of villages (neighborhood), a questionnaire survey and