title: Reliability and validity of the revised Osteoporosis Knowledge Test.
abstract: OBJECTIVE
  The purpose of this study was to test the psychometric properties of the Osteoporosis Knowledge Test (OKT) revised to incorporate recent evidence-based recommendations for bone health.
  
  
  METHODS
  The revised OKT was tested with 866 participants (mean age = 62.8 years +/- 8.5 years) in an online bone health study.
  
  
  RESULTS
  Based on Rasch analysis, there was evidence of internal consistency with an item separation index of 12.68 and a reliability score of .98. The person separation index was 2.06 with a reliability score of .81. The INFIT and OUTFIT mean-square statistics for items on both subscales all demonstrated good fit ranging from 0.71 to 1.40, except for 2 items that had low OUTFIT statistics.
  
  
  CONCLUSIONS
  The revised OKT provides sufficient reliability and construct validity.
authors.forename: Bing-Bing
authors.initials: BB
authors.lastname: Qi
authors.forename: Barbara
authors.initials: B
authors.lastname: Resnick
authors.forename: Eun-Shim
authors.initials: ES
authors.lastname: Nahm
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D007722:Health Knowledge, Attitudes, Practice; D006801:Humans; D008297:Male; D008875:Middle Aged; D010024:Osteoporosis / Q000178:diet therapy* / Q000517:prevention & control*; D011594:Psychometrics; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires / Q000592:standards*; D014481:United States