Methods to increase response to postal and electronic questionnaires.
Methods to increase response to postal and electronic questionnaires.
P. Edwards,I. Roberts,6 Authors,Sarah Pratap
2009 · DOI: 10.1002/14651858.MR000008.pub4
Cochrane Database of Systematic Reviews · 1,476 Citations
TLDR
A randomised controlled trials of methods to increase response to postal or electronic questionnaires found substantial heterogeneity among trial results in half of the strategies, which could improve the quality of health research.