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National Center for Health Statistics (DHEW/PHS), Hyattsville, MD. – 1975
This report describes the design and results of an experiment to test whether a $10.00 payment to participate in the national Health and Nutrition Examination Survey (HANES) would significantly increase the response rate for the survey. The design and findings of the study, as well as a comparison of response rates prior to and following…
Descriptors: Evaluation Methods, Participation, Questionnaires, Research Projects