Résumé :
|
[BDSP. Notice produite par INIST-CNRS dR0xsKIF. Diffusion soumise à autorisation]. Non monetary incentives lead to small increases in response rates to mailed questionnaires. However, inclusion of a pen or pencil, which may be a facilitating factor as well as a reward, has not been shown to improve response to health surveys in prior trials. In 2001 and 2002, the authors conducted two US trials in which a study-logo pen or pencil was randomly included in a second questionnaire mailed to non responders to a first mailing. In the first study, of 10,686 non responders to a cohort recruitment mailing, response to the second mailing was 55% with inclusion of a pen versus 40% without one (p
|