Effect of prize draw incentive on the response rate to a postal survey of obstetricians and gynaecologists: A randomised controlled trial. [ISRCTN32823119]
<p>Abstract</p> <p>Background</p> <p>Response rates to postal questionnaires are falling and this threatens the external validity of survey findings. We wanted to establish whether the incentive of being entered into a prize draw to win a personal digital assistant (PDA...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2004-06-01
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| Series: | BMC Health Services Research |
| Online Access: | http://www.biomedcentral.com/1472-6963/4/14 |