title: Measuring pathways towards a healthier lifestyle in the Hoorn Prevention Study: the Determinants of Lifestyle Behavior Questionnaire (DLBQ).
abstract: OBJECTIVE
  We developed the Determinants of Lifestyle Behavior Questionnaire (DLBQ) to measure determinants of lifestyle behavioral change according to the Theory of Planned Behavior (TPB) in adults at high risk of diabetes type 2 (T2DM) and cardiovascular diseases (CVD). The aim of the current study was to test the validity of the DLBQ.
  
  
  METHODS
  From February to September 2008, a cross-sectional survey was conducted in the region West-Friesland (The Netherlands) among 622 adults, aged 30-50 years at high risk of T2DM or CVD participating in a lifestyle intervention trial. Structural equation modeling techniques were used for confirmatory factor analysis and to test correlations between the TPB constructs.
  
  
  RESULTS
  The results demonstrate the factorial validity of the DLBQ in this population. The theoretical factor structure of the DLBQ is supported, and 41-56% of the variance in intentions to improve lifestyle behaviors is explained.
  
  
  CONCLUSIONS
  The DLBQ proves to be a valid instrument for measuring important determinants of the intention to change three lifestyle behaviors in adults at high risk of T2DM and CVD.
  
  
  CONCLUSIONS
  The identified 'key-determinants' of the TPB that seem to contribute to an increased intention to change behavior could be of value in designing future lifestyle interventions.
authors.affiliation: Department of General Practice and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands. j.lakerveld@vumc.nl
authors.forename: Jeroen
authors.initials: J
authors.lastname: Lakerveld
authors.forename: Sandra D M
authors.initials: SD
authors.lastname: Bot
authors.forename: Mai J M
authors.initials: MJ
authors.lastname: Chinapaw
authors.forename: Dirk L
authors.initials: DL
authors.lastname: Knol
authors.forename: Henrica C W
authors.initials: HC
authors.lastname: de Vet
authors.forename: Giel
authors.initials: G
authors.lastname: Nijpels
mesh_terms: D000328:Adult; D002318:Cardiovascular Diseases / Q000517:prevention & control*; D003430:Cross-Sectional Studies; D003924:Diabetes Mellitus, Type 2 / Q000517:prevention & control*; D005163:Factor Analysis, Statistical; D005260:Female; D015438:Health Behavior; D006801:Humans; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009426:Netherlands; D011322:Primary Prevention; D011795:Surveys and Questionnaires