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...
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| Main Authors: | , |
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| Format: | Book |
| Published: |
BMC,
2006-09-01T00:00:00Z.
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| Call Number: |
A1234.567 |
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| Copy 1 | Available |