J Epidemiol Community Health 55:845-846 doi:10.1136/jech.55.11.845
  • Public health policy and practice

Does sending a home safety questionnaire increase recruitment to an injury prevention trial? A randomised controlled trial

  1. D Kendricka,
  2. M Watsona,
  3. M Deweyb,
  4. A J Woodsc
  1. aDivision of General Practice, Floor 13, Tower Building, University Park, Nottingham NG7 2RD, UK, bTrent Institute for Health Services Research, cPostgraduate Division of Nursing, University of Nottingham, Queens Medical Centre
  1. Dr Kendrick (denise.kendrick{at}
  • Accepted 25 May 2001

Few publications have examined maximising recruitment to randomised controlled trials in primary care. Mass mailings have been used as a recruitment strategy,1-3 but have had low response rates. Short messages in mass mailings have acheived better recruitment rates than longer messages.4 Within a primary care injury prevention trial we assessed response and recruitment rates to the trial using mass mailing, comparing an invitation to participate with and without a home safety questionnaire. We considered that sending a questionnaire may reduce the recruitment rate because of the time and effort needed for completion4 or because questions on safety behaviours and previous injury may be perceived as intrusive; alternatively we considered that the questionnaire may raise awareness of risk of injury and through this might increase the recruitment rate.5


The study population comprised the first 2397 families …