title: [The impact of a verbal consent form on the participation rate in a telephone survey].
abstract: OBJECTIVE
  To assess the impact of a consent form on the participation rate in a telephone survey about gambling and money.
  
  
  METHODS
  Four different consent forms were tested. The first consent form globally met the academic ethics committee requirements, while the second and third forms excluded some elements. Finally, the fourth form was similar to the introduction generally used by private survey firms.
  
  
  RESULTS
  Even when the consent form required by academic ethics committees was shortened, the private firm introduction led to the best participation rate. However, participants who received the private firm introduction indicated that they wished they had been better informed before the interview started.
  
  
  CONCLUSIONS
  The discussion highlights the delicate situation of academic research wishing to meet ethics requirements as well as conduct valid and representative research.
authors.affiliation: Centre québécois d'excellence pour la prévention et le traitement du jeu, Ecole de psychologie, Université Laval, Québec, Québec. Christian.Jacques@psy.ulaval.ca
authors.forename: Christian
authors.initials: C
authors.lastname: Jacques
authors.forename: Robert
authors.initials: R
authors.lastname: Ladouceur
authors.forename: Patricia-Maude
authors.initials: PM
authors.lastname: Fournier
authors.forename: Lucie
authors.initials: L
authors.lastname: Baillargeon