1. Cost-effectiveness of follow-up contact for a postal survey: a randomised controlled trial
- Author
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Breen, Courtney L., Shakeshaft, Anthony P., Doran, Christopher M., Sanson-Fisher, Rob W., and Mattick, Richard P.
- Subjects
Mail surveys -- Research ,Telephone surveys -- Research ,Cost control -- Research ,Cost reduction ,Health - Abstract
Objective: This study examines the effectiveness and costs of follow-up phone calls in improving response rates to a community survey. Methods: Non-responders to a postal survey were randomly allocated to receive a phone call or no phone call. The resources used for the development and implementation of the survey were documented. The response rates and cost per level of follow-up contact examined. Results: Follow-up phone calls led to a statistical significant increase in the number of responses to a community-wide survey, relative to no phone call. This relative increase in responses (n=62 for the follow-up phone call group versus n=l for controls), did not increase the absolute survey response rate sufficiently (from 38.5% for two mailed surveys to 39.8% for two mailed surveys plus a phone call) to justify the phone call costs. Scenario analyses show increasing the initial response rate by 10% and conducting a second mailed survey achieves greater marginal cost savings than increasing the response rate to the second mailout or the follow-up phone calls. Conclusions: These results suggest a follow-up phone call was not cost effective. Survey research ought to primarily focus on obtaining optimal initial response rates by using strategies identified in a Cochrane meta-analytic review. Key words: response rate, non-response, survey, follow-up, cost, randomised controlled trial. Aust NZ J Public Health. 2010; 34:508-12 doi: 10.1111/j.1753-6405.2010.00598.x
- Published
- 2010