Herrmann N
Am J Epidemiol. 1985 Jun;121(6):948-53. doi: 10.1093/oxfordjournals.aje.a114065.
Medical and dietary consumption histories obtained at two times from cases or controls and their next-of-kin as part of a study of colon cancer in the five Pennsylvania counties of the Philadelphia metropolitan area were compared. The case population was confined to whites aged 45-69 years who had resided in the region for at least two years prior to diagnosis and were diagnosed with colon cancer after July 1, 1976. Controls were selected using an area probability sampling scheme and were frequency-matched to the case group. Questionnaires for randomly selected subsamples of cases and controls were administered by interviewers; questionnaires for next-of-kin were randomly allocated to be self- or interviewer-administered. Agreement when respondents received the interviewer-administered questionnaire at both interviews was greater than when the self-administered questionnaire was used. Medical variables exhibited high agreement, the percentage agreement exceeded 80 for over 80% of the comparisons, the kappa statistic exceeded 0.6 for half of the comparisons. Diet histories were more variable (average agreement ranging from 56% to 67% and average kappa values from 0.16 to 0.40 for the different comparisons).
作为对费城大都市区宾夕法尼亚州五个县结肠癌研究的一部分，对病例组或对照组及其近亲在两个时间点获得的医疗和饮食消费史进行了比较。病例组仅限于年龄在45至69岁之间的白人，他们在诊断前至少在该地区居住了两年，并于1976年7月1日之后被诊断出患有结肠癌。对照组采用区域概率抽样方案进行选择，并与病例组进行频率匹配。由访谈员对随机抽取的病例和对照组子样本进行问卷调查；给近亲的问卷随机分配为自行填写或由访谈员填写。当受访者在两次访谈中都收到访谈员填写的问卷时，一致性高于使用自行填写问卷时。医疗变量显示出高度一致性，超过80%的比较中百分比一致性超过80%，一半的比较中kappa统计量超过0.6。饮食史的变化更大（不同比较的平均一致性在56%至67%之间，平均kappa值在0.16至0.40之间）。
