title: Healthy eating opinion survey for individuals at risk for cardiovascular disease.
abstract: OBJECTIVE
  To develop and evaluate the validity and reliability of a questionnaire to measure intentions and beliefs about healthy eating in individuals at risk for coronary heart disease.
  
  
  METHODS
  The Healthy Eating Opinion Survey was developed using the theory of planned behavior. An open-ended elicitation questionnaire was administered to 21 participants, and a 46-item questionnaire was developed for further testing. Test-retest reliability of each question on the survey was assessed by calculating the correlation coefficients between the responses over a 2- week period in 17 participants. Internal consistency was assessed using Cronbach's alpha, and factor analysis was used to assess the construct validity of the questionnaire in a sample of 388 participants.
  
  
  RESULTS
  The responses to the elicitation questions were used to develop behavioral beliefs, normative beliefs, and control beliefs questions for the final questionnaire. Test-retest reliability ranged from 0.22-0.90, with the majority (89%) of correlations being moderate to strong. Internal consistency was good, with Cronbach's alpha ranging from 0.74-0.92. All intentions questions loaded onto a single factor; attitude questions loaded onto two factors; subjective norm questions loaded onto two factors; perceived behavioral control questions loaded onto one factor; behavioral beliefs questions loaded onto one factor; normative beliefs questions loaded onto one factor; and control beliefs questions loaded onto one factor.
  
  
  CONCLUSIONS
  The questionnaire was found to be a reliable, valid questionnaire to assess beliefs and intentions toward eating a healthy diet in individuals at risk for coronary heart disease.
authors.affiliation: Division of Prevention and Rehabilitation, University of Ottawa Heart Institute.
authors.forename: Amy E
authors.initials: AE
authors.lastname: Mark
authors.affiliation: Division of Prevention and Rehabilitation, University of Ottawa Heart Institute.
authors.forename: Dana L
authors.initials: DL
authors.lastname: Riley
authors.affiliation: Division of Prevention and Rehabilitation, University of Ottawa Heart Institute.
authors.forename: Lisa A
authors.initials: LA
authors.lastname: McDonnell
authors.affiliation: Division of Prevention and Rehabilitation, University of Ottawa Heart Institute.
authors.forename: Andrew L
authors.initials: AL
authors.lastname: Pipe
authors.affiliation: Division of Prevention and Rehabilitation, University of Ottawa Heart Institute.
authors.forename: Robert D
authors.initials: RD
authors.lastname: Reid
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003327:Coronary Disease; D004435:Eating / Q000523:psychology*; D005260:Female; D015438:Health Behavior; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D033182:Intention; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D018570:Risk Assessment; D011795:Surveys and Questionnaires; D055815:Young Adult