Effect of prize draw incentive on the response rate to a postal survey of obstetricians and gynaecologists: a randomised controlled trial. [ISRCTN32823119

BMC Health Services Research
Sharon H Moses, T J Clark

Abstract

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) would increase the response rate for a national survey of consultant obstetricians and gynaecologists. A randomised controlled trial was conducted. This involved sending a postal questionnaire to all Consultant Obstetricians and Gynaecologists in the United Kingdom. Recipients were randomised to receiving a questionnaire offering a prize draw incentive (on response) or no such incentive. The response rate for recipients offered the prize incentive was 64% (461/716) and 62% (429/694) in the no incentive group (relative rate of response 1.04, 95% CI 0.96 - 1.13) The offer of a prize draw incentive to win a PDA did not significantly increase response rates to a national questionnaire survey of consultant obstetricians and gynaecologists.

References

Sep 21, 1996·BMJ : British Medical Journal·B R McAvoy, E F Kaner
May 23, 2002·BMJ : British Medical Journal·Phil EdwardsIrene Kwan
Oct 18, 2002·Journal of Clinical Epidemiology·Gabriel M LeungFung Kam Wong

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Citations

Apr 21, 2012·BMC Medical Research Methodology·Frank OlsenJan Abel Olsen
Nov 8, 2007·Evaluation & the Health Professions·Jonathan B VanGeestVerna L Welch
Jul 10, 2009·The Cochrane Database of Systematic Reviews·Philip James EdwardsSarah Pratap
Aug 18, 2005·The Journal of Family Planning and Reproductive Health Care·Gill Wakley
May 9, 2009·The Journal of Bone and Joint Surgery. American Volume·Sheila SpragueMohit Bhandari

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