title: The use of theory in research on nutrition guidance practices by primary care physicians from 1995 to October 2008: a review.
abstract: BACKGROUND
  Theory-based interventions on nutrition guidance practices of primary care physicians (PCPs) are thought to be more effective than those that do not use theory.
  
  
  OBJECTIVE
  To assess how often and which theoretical models of behaviour change are used in research on nutrition guidance practices of PCPs.
  
  
  METHODS
  A review of articles published from 1995 to October 2008 (n = 111).
  
  
  RESULTS
  It was found that 45% of the articles in this review included theories or theoretical models of behaviour change. No difference in proportion of model use was found with time. Model use differed between type of study. In 29% of the articles, the Transtheoretical Model was used. Little was found on authors' views on theoretical model applicability.
  
  
  CONCLUSIONS
  Forty-five per cent of the articles on nutrition guidance practices of PCPs published from 1995 to October 2008 included theories or theoretical models of behaviour change. It would be beneficial for nutrition behaviour change research if more researchers use theoretical models and report on applicability of the selected theory, to increase effectiveness of nutrition guidance by PCPs.
authors.affiliation: Department of Human Nutrition, Wageningen University, Wageningen, The Netherlands. eveline.hooft@wur.nl
authors.forename: Eveline J C
authors.initials: EJ
authors.lastname: Hooft van Huysduynen
authors.forename: Gerrit J
authors.initials: GJ
authors.lastname: Hiddink
authors.forename: Cees J M
authors.initials: CJ
authors.lastname: van Woerkum
mesh_terms: D003376:Counseling / Q000458:organization & administration*; D015438:Health Behavior; D006302:Health Services Research / Q000458:organization & administration*; D006801:Humans; D008962:Models, Theoretical; D050177:Overweight / Q000517:prevention & control; D058007:Physicians, Primary Care; D011320:Primary Health Care