title: Internal consistency and validity of the BITE for the screening of bulimia nervosa in university students, Colombia.
abstract: OBJECTIVE
  To establish the validity and internal consistency of the bulimic investigatory test, Edinburgh (BITE) in a non-clinical population of university students in Colombia.
  
  
  METHODS
  A validation study with a cross-sectional sampling was designed. Two-hundred and sixty-one students were evaluated independently and blindly with BITE and the Composite International Diagnostic Interview. Kuder-Richardson's test, sensitivity, specificity, predictive values, likelihood values, Cohen kappa, area under the ROC curve for BITE's symptoms scale and Cronbach's alpha for severity scale were computed.
  
  
  RESULTS
  The Kuder-Richardson's test was 0.86, two factors were identified which explain the 22.68% and 7.12% of variance. Cronbach's alpha for severity scale was 0.52. Area under ROC curve was 0.9736. The best cutoff point was 11 with sensitivity of 94.59%, specificity of 91.52%, positive predictive value of 64.81%, negative predictive value of 99.03%; with a concordance of 0.7226.
  
  
  CONCLUSIONS
  The BITE's symptom scale is useful in identifying clinically binge-eaters in university students.
authors.affiliation: Neuropsychiatry Research Group, Facultad de Medicina, Universidad Autónoma de Bucaramanga, UNAB, Bucaramanga, Colombia. gredu@unab.edu.co
authors.forename: G E
authors.initials: GE
authors.lastname: Rueda-Jaimes
authors.forename: P A
authors.initials: PA
authors.lastname: Camacho López
authors.forename: A M
authors.initials: AM
authors.lastname: Rangel-Martínez-Villalba
mesh_terms: D000293:Adolescent; D000328:Adult; D052018:Bulimia Nervosa / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D003105:Colombia; D003430:Cross-Sectional Studies; D001068:Feeding and Eating Disorders / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D010555:Personality Inventory / Q000706:statistics & numerical data*; D011594:Psychometrics / Q000706:statistics & numerical data; D012372:ROC Curve; D012016:Reference Values; D015203:Reproducibility of Results; D013334:Students / Q000523:psychology* / Q000706:statistics & numerical data