Xu Z, Zheng H, Hu D
Dept. of Epidemiology, Shanghai Medical University.
Zhonghua Liu Xing Bing Xue Za Zhi. 1994 Apr;15(2):94-8.
Baseline investigation on 15,885 subjects who were over thirty-five years old had been launched since July 1987. All of them were selected from eighteen neighbourhoods of three districts in Shanghai by using multiple stage cluster sampling procedure. All of them were followed up till the end of 1989. Each new case of stroke was randomly matched with about twenty controls by age and sex. The total 2,682 controls together with 127 new cases of strokes were analyzed by using Cox regression model for risk factors. The population attributable risk proportion (PARP) of factors was also estimated.
自1987年7月起，对15885名35岁以上的研究对象展开了基线调查。所有研究对象均通过多阶段整群抽样程序从上海三个区的18个居委会中选取。对他们全部进行随访直至1989年底。每例新发中风病例均按年龄和性别随机匹配约20名对照。采用Cox回归模型对2682名对照和127例新发中风病例进行危险因素分析。还估计了各因素的人群归因危险度百分比（PARP）。
