Questionnaires and postal research: more than just high response rates.

摘要: Editor,—In the recent editorial by Bates and Rogstad1 authors describe problems associated with conducting postal research including response rates, use of incentives, bias, mailing clinical specimens, ethical issues. We would like to add that there are other important issues consider when undertaking questionnaire research. The effectiveness incentives increase rates remains controversial. Kalantar Talley2 recommend using a lottery incentive as it increases after first mailing. However, differences between groups were not large, decreased during follow up disappeared fourth Koloski et al 3 found tickets but may be limited them long questionnaires (32 pages). Moreover, they compared …