International Questionnaire Postal Response Rate: An experiment comparing no return postage to provision of International Postage Vouchers – "Coupon-Réponse International"
Published Date:Jul 06 2004
Source:BMC Health Serv Res. 4:16.
Previous studies of methods to increase response rates on international postal surveys did not include providing return postage. We provided International Postage Vouchers – "Coupon-Réponse International" to cover this. The objective of this study was to see if these International Postage Vouchers had an effect on response rates.
Between-groups, randomized, after-only
There was no difference in response rates between the group that received International Postage Vouchers and the group that did not. (p = 0.23)
International Postage Vouchers – "Coupon-Réponse International" have no effect on response rates for international postal surveys.
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