title: Psychometric Evaluation of the Colorectal Cancer Screening Belief Scale Based on Health Belief Model's Constructs for the Fecal Occult Blood Test.
abstract: BACKGROUND
  It is important to validate scales related to cancer screening beliefs in order to better understand perceptions. The aim of this study was to test the psychometric properties of the colorectal cancer screening belief scale based on Health Belief Model (HBM) constructs.
  
  
  METHODS
  Data were collected from 600 persons referred to outpatient laboratory units in Iran through a convenience sampling procedure. In this cross-sectional study, exploratory and confirmatory factor analyses were used to examine construct validity of scale.
  
  
  RESULTS
  Through exploratory factor analysis, 52 items of the scale converged to five constructs of HBM with 4 items omission. Construct validity was determined by confirmatory factor analysis through which correlated model was supported. Cronbach's alpha coefficient for the whole scale was obtained as 0.78, which indicates reliability of the scale.
  
  
  CONCLUSIONS
  The study findings showed that this scale is a valid and reliable instrument that can be used for measuring HBM constructs about colorectal cancer screening with the fecal occult blood test.
authors.affiliation: Biostatistics, Bushehr University of Medical Sciences, Bushehr, Iran E-mail : azitanoroozi@yahoo.com.
authors.forename: Rahim
authors.initials: R
authors.lastname: Tahmasebi
authors.forename: Azita
authors.initials: A
authors.lastname: Noroozi
authors.forename: Kamel Ghobadi
authors.initials: KG
authors.lastname: Dashdebi
mesh_terms: D015179:Colorectal Neoplasms / Q000523:psychology*; D003430:Cross-Sectional Studies; D055088:Early Detection of Cancer / Q000523:psychology*; D005163:Factor Analysis, Statistical; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D007492:Iran; D008297:Male; D008960:Models, Psychological; D009780:Occult Blood; D011594:Psychometrics / Q000379:methods; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires