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International Questionnaire Postal Response Rate: An experiment comparing no return postage to provision of International Postage Vouchers – "Coupon-Réponse International"
BACKGROUND: 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 Internatio...
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| Formato: | Texto |
| Lenguaje: | English |
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BioMed Central
2004
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC471557/ https://www.ncbi.nlm.nih.gov/pubmed/15238155 http://dx.doi.org/10.1186/1472-6963-4-16 |