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Unconditional and conditional monetary incentives to increase response to mailed questionnaires: A randomized controlled study within a trial (SWAT) |
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| Authors: | Ben Young Laura Bedford Roshan das Nair Stephanie Gallant Roberta Littleford John F.R. Robertson Stuart Schembri Frank M. Sullivan Kavita Vedhara Denise Kendrick |
| Abstract: | |
| Keywords: | questionnaires response rates recruitment strategies monetary incentives clinical trial randomized SWAT |