The Effect of an Informational Newsletter on Control Participation Rates
- 1 September 1991
- journal article
- clinical trial
- Published by Wolters Kluwer Health in Epidemiology
- Vol. 2 (5) , 380-382
- https://doi.org/10.1097/00001648-199109000-00013
Abstract
We employed a randomized study of 344 subjects to determine whether an initial contact letter accompanied by an informational newsletter increased participation in a population-based case-control study. The results indicated that there was no benefit in including a newsletter with a letter of introduction. There may have been a slight detrimental effect, since those who received the newsletter were less likely to consent to an in-person interview (82%) than those who did not (88%).Keywords
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