Most response-inducing strategies do not increase participation in observational studies: a systematic review and meta-analysis
van Gelder, Marleen M.H.J., Vlenterie, Richelle, IntHout, Joanna, Engelen, Lucien J.L.P.G., Vrieling, Alina, van de Belt, Tom H.Language:
english
Journal:
Journal of Clinical Epidemiology
DOI:
10.1016/j.jclinepi.2018.02.019
Date:
March, 2018
File:
PDF, 1.61 MB
english, 2018