ANDERSON D O, FERRIS B G, DAVIS T W
Can Med Assoc J. 1965 Apr 24;92(17):899-905.
In order to ascertain the prevalence of chronic respiratory disease in residents of a rural town and to determine the relative importance of tobacco smoking and air pollution, a survey was conducted of 726 persons living at Chilliwack, British Columbia, in May and June, 1963. Over 95% of a random sample of adults was interviewed and performed simple tests of respiratory function. The sample was selected from a commercial census. An analysis of the demographic characteristics of the sample indicated that the group, aged 25 to 74 years, was reasonably representative for detailed study of chronic respiratory disease.
为了确定某乡村城镇居民慢性呼吸道疾病的患病率，并确定吸烟和空气污染的相对重要性，1963年5月和6月对不列颠哥伦比亚省奇利瓦克市的726人进行了一项调查。随机抽取的成年人样本中超过95%接受了访谈并进行了简单的呼吸功能测试。样本是从商业人口普查中选取的。对样本人口统计学特征的分析表明，年龄在25至74岁之间的该群体对于慢性呼吸道疾病的详细研究具有合理的代表性。
