Personally addressed hand-signed letters increase questionnaire response: a meta-analysis of randomised controlled trials
<p>Abstract</p> <p>Background</p> <p>Postal questionnaires are commonly used to collect data for health studies, but non-response reduces study sample sizes and can introduce bias. Finding ways to increase the proportion of questionnaires returned would improve research...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2006-09-01
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| Series: | BMC Health Services Research |
| Online Access: | http://www.biomedcentral.com/1472-6963/6/111 |