Document Detail


Timing payments to subjects of mail surveys: cost-effectiveness and bias.
MedLine Citation:
PMID:  7490595     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Although mailed surveys are an important component of epidemiological research, results from mailed surveys are often suspect because of poor response rates and the potential for nonresponse bias. Previous work has demonstrated that paying subjects to complete questionnaires increases response rates, but this work has not well addressed the impact of the timing of incentives on total cost, cost effectiveness, and response bias. We surveyed 400 university employees about health benefits. By random allocation, half received a check for $5 along with the mailed survey, and the other half received the promise of $5 on return of a completed survey. The response rates for both groups were about the same (64 and 59%, respectively), but prepayment was less expensive in aggregate and less expensive per response. In addition, we found that subjects with lower salaries were more likely to respond when paid in advance. We conclude that prepayment may actually be less expensive and more cost effective than payment on completion, but that the timing of payment may influence the profile of respondents.
Authors:
M Schweitzer; D A Asch
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article; Randomized Controlled Trial; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of clinical epidemiology     Volume:  48     ISSN:  0895-4356     ISO Abbreviation:  J Clin Epidemiol     Publication Date:  1995 Nov 
Date Detail:
Created Date:  1996-01-04     Completed Date:  1996-01-04     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8801383     Medline TA:  J Clin Epidemiol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1325-9     Citation Subset:  IM    
Affiliation:
Section of General Internal Medicine, Veterans Affairs Medical Center, Philadelphia, Pennsylvania, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Bias (Epidemiology)
Cost-Benefit Analysis
Data Collection / economics*,  methods
Health Benefit Plans, Employee
Health Knowledge, Attitudes, Practice
Humans
Income
Middle Aged
Postal Service*
Questionnaires / economics*
Time Factors

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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