TY - JOUR T1 - Effects of disseminating research findings on response rates in a community survey: a randomised controlled trial JF - Journal of Epidemiology and Community Health JO - J Epidemiol Community Health SP - 536 LP - 537 DO - 10.1136/jech.57.7.536 VL - 57 IS - 7 AU - D S Morrison AU - H Thomson AU - M Petticrew Y1 - 2003/07/01 UR - http://jech.bmj.com/content/57/7/536.abstract N2 - Response rates to postal questionnaire surveys are declining,1 particularly in areas of deprivation.2 These may limit the external and internal validity of the findings of such studies. A recent systematic review3 identified interventions that may be effective in improving response rates although no trial was identified that evaluated the effectiveness of feeding back research findings to respondents.As part of an evaluation of the health impacts of building a traffic calming scheme, we surveyed local residents six months before (first survey) and six months after (second survey) the scheme was built. We carried out a randomised controlled trial to evaluate the effects of a study feedback information leaflet on response rates to the second postal questionnaire survey. We randomly selected 750 addresses from the study population of 2587 residents to send our first survey (see fig 1). The second survey was sent to 576 addresses after we excluded undeliverable addresses and refusals … ER -