Meta-analysis of randomised trials of monetary incentives and response to mailed questionnaires
P. Edwards, R. Cooper, I. Roberts, and C. Frost
J Epidemiol Community Health 2005 59: 987-999.
P. Edwards, R. Cooper, I. Roberts, and C. Frost
J Epidemiol Community Health 2005 59: 987-999.
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- [view PDF] - Appendix: References to studies included in the meta analysis.
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