在关于敏感主题的邮寄问卷调查中，匿名性会提高回复率吗？一项随机试验。
Does anonymity increase response rate in postal questionnaire surveys about sensitive subjects? A randomised trial.
作者信息
Campbell M J, Waters W E
机构信息
University of Southampton, United Kingdom.
出版信息
J Epidemiol Community Health. 1990 Mar;44(1):75-6. doi: 10.1136/jech.44.1.75.
STUDY OBJECTIVE
The aim of the study was to determine whether complete anonymity improves the response rates to a postal questionnaire.
DESIGN
The study derived from a series of postal surveys on AIDS knowledge conducted on six different dates in 1986 and 1987. The sample was randomly divided into two, each group being sent the same questionnaire. One group was informed that the replies were anonymous, the other that they were not. The latter were sent reminders.
SETTING
Recipients of the questionnaires were drawn from the Southampton electoral rolls.
PARTICIPANTS
300 people in each survey (total 1800) were sent questionnaires, representing on each occasion a different 1:500 systematic sample.
RESULTS
Response rate was 49% for the anonymous questionnaires and 51% for the numbered questionnaires. Reminders boosted the response in the numbered group to 72%.
CONCLUSIONS
There is no evidence that anonymity improves response to postal questionnaires, but the use of reminders may do so.
研究目的
本研究旨在确定完全匿名是否能提高邮寄问卷调查的回复率。
设计
该研究源自1986年和1987年在六个不同日期进行的一系列关于艾滋病知识的邮寄调查。样本被随机分为两组，每组都收到相同的问卷。一组被告知回复是匿名的，另一组则被告知不是。后者收到了催复函。
背景
问卷的收件人来自南安普敦选民名册。
参与者
每次调查向300人（共1800人）发送问卷，每次均为不同的1:500系统抽样。
结果
匿名问卷的回复率为49%，编号问卷的回复率为51%。催复函使编号组的回复率提高到72%。
结论
没有证据表明匿名能提高邮寄问卷调查的回复率，但使用催复函可能会提高回复率。
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