期刊
JOURNAL OF CLINICAL EPIDEMIOLOGY
卷 58, 期 9, 页码 959-961出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jclinepi.2005.03.002
关键词
general practice; randomized trial; response rate; survey methodology
Background and Objective: There is a growing evidence base on methods to improve response rates in surveys among patients. This study aimed to determine the additional effect of two intensive follow-up procedures compared to a simple follow-up procedure. Methods: Randomized controlled trial that compared repeated mailing of the questionnaire and a request to explain nonparticipation with a simple reminder card. The study population comprised 955 elderly adults registered with 26 general practitioners in The Netherlands. Results: A total of 530 adults (56%) returned the questionnaire within 3 weeks and a total of 640 (67%) after follow-up. Repeated mailing of the questionnaire had additional effect compared to the simple reminder card in the group of initial nonresponders (relative risk = 1.60, 95% confidence interval: 1.11-2.31), but not regarding the overall response rate. A request to explain nonparticipation did not have additional effect. Conclusion: Repeated mailing of the questionnaire increased the effectiveness of follow-up among initial nonresponders. (c) 2005 Elsevier Inc. All rights reserved.
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