Does requesting sensitive information on postal questionnaires have an impact on response rates? A randomised controlled trial in the south west of England
Open Access
- 1 February 1998
- journal article
- clinical trial
- Published by BMJ in Journal of Epidemiology and Community Health
- Vol. 52 (2) , 130
- https://doi.org/10.1136/jech.52.2.130
Abstract
No abstract availableThis publication has 5 references indexed in Scilit:
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- EFFECT OF CONTACT LETTER ON CONTROL RESPONSE RATES IN CANCER STUDIESAmerican Journal of Epidemiology, 1988