Differential effects of pre and post-payment on neurologists' response rates to a postal survey
AuthorKanaan, RAA; Wessely, SC; Armstrong, D
Source TitleBMC Neurology
PublisherBIOMED CENTRAL LTD
University of Melbourne Author/sKanaan, Richard
Document TypeJournal Article
CitationsKanaan, R. A. A., Wessely, S. C. & Armstrong, D. (2010). Differential effects of pre and post-payment on neurologists' response rates to a postal survey. BMC NEUROLOGY, 10 (1), https://doi.org/10.1186/1471-2377-10-100.
Access StatusOpen Access
BACKGROUND: Monetary incentives are an effective way of increasing response rates to surveys, though they are generally less effective in physicians, and are more effective when the incentive is paid up-front rather than when made conditional on completion. METHODS: In this study we examine the effectiveness of pre- and post-completion incentives on the response rates of all the neurologists in the UK to a survey about conversion disorder, using a cluster randomised controlled design. A postal survey was sent to all practicing consultant neurologists, in two rounds, including either a book token, the promise of a book token, or nothing at all. RESULTS: Three hundred and fifty-one of 591 eligible neurologists completed the survey, for a response rate of 59%. While the post-completion incentive exerted no discernible influence on response rates, a pre-completion incentive did, with an odds-ratio of 2.1 (95% confidence interval 1.5-3.0). CONCLUSIONS: We conclude that neurologists, in the UK at least, may be influenced to respond to a postal survey by a pre-payment incentive but are unaffected by a promised reward.
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