Mailed questionnaires are an economical method of data collection for epidemiologic studies, but response tends to be lower than for telephone or personal interviews.
As part of a follow-up study of volunteers who provided a brief health history and blood sample for a blood specimen bank in 1989, the authors conducted a controlled trial of the effect of length, incentives, and follow-up techniques on response to a mailed questionnaire.
Interventions tested included variations on length of the questionnaire, effect of a monetary incentive, and effect of a postcard reminder versus a letter accompanied by a second questionnaire.
Response was similar for the short (16-item, 4-page) and long (76-item, 16-page) questionnaire groups.
The monetary incentive did not improve the frequency of response.
The second mailing of a questionnaire was significantly better than a postcard reminder in improving responses (23% vs. 10%). It is important to systematically test marketing principles to determine which techniques are effective in increasing response to mailed questionnaires for epidemiologic studies.
Mots-clés Pascal : Etude en condition contrôlée, Epidémiologie, Méthodologie, Questionnaire, Enquête par correspondance, Réponse, Taux, Motivation, Evaluation, Collecte donnée, Homme
Mots-clés Pascal anglais : Controlled environment study, Epidemiology, Methodology, Questionnaire, Mail inquiry, Response, Rate, Motivation, Evaluation, Data gathering, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0049642
Code Inist : 002B30A01A1. Création : 31/05/1999.