title: Impact of a postcard versus a questionnaire as a first reminder in a postal lifestyle survey.
abstract: OBJECTIVE
  The study aimed to consider the impact of two different types of reminder on response rates and costs in a postal survey.
  
  
  METHODS
  The study was a cross sectional survey. A self-completion lifestyle questionnaire was used. Those who did not respond after the initial mailing were randomly allocated to receive either a postcard or questionnaire as a first reminder. All outstanding non-responders received a questionnaire as a second reminder.
  
  
  METHODS
  A representative sample of 698 adults aged 16-70 was used, drawn from a family health services authority register.
  
  
  RESULTS
  Postcard reminders were as effective as questionnaire reminders in increasing response whether one or two reminders are sent. The costs per response were calculated. Two questionnaires as reminders were found to be 1.7 times more expensive than a postcard plus questionnaire. Including the initial mailing, the cost per response using all questionnaires was 1.3 times the cost when a postcard was used for the first reminder.
  
  
  CONCLUSIONS
  To increase the response to a postal survey effectively and economically, two reminders should be sent--first a postcard and then a questionnaire.
authors.affiliation: Department of Public Health Medicine and Epidemiology, University of Nottingham Medical School, Queen's Medical Centre.
authors.forename: H
authors.initials: H
authors.lastname: Roberts
authors.forename: J C
authors.initials: JC
authors.lastname: Pearson
authors.forename: R
authors.initials: R
authors.lastname: Dengler
mesh_terms: D001294:Attitude to Health; D003365:Costs and Cost Analysis; D003430:Cross-Sectional Studies; D004739:England; D006801:Humans; D008019:Life Style; D010865:Pilot Projects; D011177:Postal Service; D011897:Random Allocation; D017010:Reminder Systems / Q000191:economics; D011795:Surveys and Questionnaires