A monetary incentive increases postal survey response rates for pharmacists.
BACKGROUND
Achieving acceptable response rates from health care providers via postal questionnaires is an ongoing challenge. The use of monetary incentives is one of the most effective strategies for increasing response rates. However, the effect and cost of such an incentive on retail pharmacists' response rates has not been well studied.


METHODS
A sample of 700 pharmacies was selected at random from the electronic Yellow Pages in NSW Australia and mailed a brief survey regarding pharmacotherapies and advice for smoking cessation. Half of the sample was randomly allocated to receive an offer of an 14 US dollars gift voucher.


RESULTS
The response rates were 65.9% for the voucher group and 53.5% for the no-voucher group. The odds of response from the voucher group was 1.68 (95%CI = 1.23, 2.30) times greater than for the no-voucher group. The cost per additional respondent was 67.95 US dollars. The incentive also reduced follow up costs by 10%.


CONCLUSIONS
A moderately sized monetary incentive is able to achieve a significant increase in response rates for retail pharmacists, thereby reducing potential bias in the sample.
Paul
Christine L
CL
Centre for Health Research and Psycho-oncology (CHeRP), Locked Bag No 10, Wallsend 2287, NSW, Australia. Chris.Paul@newcastle.edu.au
Walsh
Raoul A
RA
Tzelepis
Flora
F
D001315:Australia; D003362:Cost-Benefit Analysis; D019538:Health Care Surveys / Q000191:economics / Q000379:methods*; D006801:Humans; D009042:Motivation; D010595:Pharmacists / Q000191:economics / Q000523:psychology*; D011177:Postal Service; D011897:Random Allocation; D016540:Smoking Cessation; D011795:Surveys and Questionnaires / Q000191:economics*