Coughlin S S
Department of Epidemiology, Johns Hopkins School of Hygiene and Public Health, Baltimore, Maryland.
J Clin Epidemiol. 1990;43(1):87-91. doi: 10.1016/0895-4356(90)90060-3.
The factors which contribute to bias due to differential recall between cases and controls in retrospective studies have been little studied. A review of the literature on recall accuracy suggests that the extent of inaccurate recall is related to characteristics of the exposure of interest and of the respondents, though a distinction must be drawn between recall which is biased and that which is simply inaccurate. Interviewing technique and the study protocol, including the design of questionnaires and the motivation of respondents, play a central role and are under the control of the investigator. The results of validation studies carried out to date suggest that the likelihood of recall bias may be greater when recall is poor in general.
回顾性研究中，病例组和对照组之间因回忆差异导致偏倚的因素鲜有研究。对回忆准确性相关文献的综述表明，不准确回忆的程度与感兴趣暴露因素及受访者的特征有关，不过必须区分有偏倚的回忆和单纯不准确的回忆。访谈技巧和研究方案，包括问卷设计及受访者的积极性，起着核心作用且受研究者控制。迄今为止开展的验证性研究结果表明，总体回忆较差时，回忆偏倚的可能性可能更大。
