文摘

研究目标,其目的是检查原因情况说明在一个社区的调查中,和情况说明如何影响一些接触和疾病的患病率估计变量和变量之间的关联。设计——这是一个横断面问卷调查研究有两个催缴单。吸烟习惯的调查问卷要求信息,职业机载接触和呼吸系统疾病。设置——一个随机抽取的4992名受试者一般15 - 70岁人口的Hordaland县,挪威。主要结果——总体响应率为90%,反应初始信了63%。第一次和第二次催缴单的响应率分别为56%和36%。在20%的non-respondents返回一个未完成的问卷情况的原因;在三分之二的这些情况的原因是,这个话题并不是居民邮寄地址。家庭访问一个随机样本的50个城市non-respondents 29日提供进一步的信息主题。一个错误的地址在中央人口注册中心和主体的缺乏个人的感觉受益于邮政调查情况的主要原因。 Smokers were late respondents and subjects with respiratory disorders tended to be early respondents. CONCLUSION--The main reasons for non-response were a wrong mailing address and a feeling of lack of personal benefit from responding. Using only the initial letter would have changed the estimated prevalence of smokers from 39% to 35%. Otherwise, the estimated prevalence of the exposure and disease variables as well as the associations between them were only slightly changed after including the respondents to the first and second reminder letters.