Loban Amanda, Mandefield Laura, Hind Daniel, Bradburn Mike
Clinical Trials Research Unit, University of Sheffield, Regent Court, 30 Regent Street, Sheffield S1 4DA, UK.
Clinical Trials Research Unit, University of Sheffield, Regent Court, 30 Regent Street, Sheffield S1 4DA, UK.
J Clin Epidemiol. 2017 Dec;92:116-125. doi: 10.1016/j.jclinepi.2017.08.003. Epub 2017 Aug 24.
The objective of this study was to compare the response rates, data completeness, and representativeness of survey data produced by online and postal surveys.
A randomized trial nested within a cohort study in Yorkshire, United Kingdom. Participants were randomized to receive either an electronic (online) survey questionnaire with paper reminder (N = 2,982) or paper questionnaire with electronic reminder (N = 2,855).
Response rates were similar for electronic contact and postal contacts (50.9% vs. 49.7%, difference = 1.2%, 95% confidence interval: -1.3% to 3.8%). The characteristics of those responding to the two groups were similar. Participants nevertheless demonstrated an overwhelming preference for postal questionnaires, with the majority responding by post in both groups.
Online survey questionnaire systems need to be supplemented with a postal reminder to achieve acceptable uptake, but doing so provides a similar response rate and case mix when compared to postal questionnaires alone. For large surveys, online survey systems may be cost saving.
本研究的目的是比较在线调查和邮寄调查所产生的调查数据的回复率、数据完整性和代表性。
一项嵌套于英国约克郡队列研究中的随机试验。参与者被随机分配接受带有纸质提醒的电子（在线）调查问卷（N = 2982）或带有电子提醒的纸质调查问卷（N = 2855）。
电子联系方式和邮寄联系方式的回复率相似（50.9%对49.7%，差值 = 1.2%，95%置信区间：-1.3%至3.8%）。两组回复者的特征相似。然而，参与者对邮寄问卷表现出压倒性的偏好，两组中的大多数人都通过邮寄方式回复。
在线调查问卷系统需要辅以邮寄提醒以实现可接受的参与率，但与仅使用邮寄问卷相比，这样做能提供相似的回复率和病例组合。对于大型调查，在线调查系统可能节省成本。
