title: Validation of the Finnish version of the SCOFF questionnaire among young adults aged 20 to 35 years.
abstract: BACKGROUND
  We tested the validity of the SCOFF, a five-question screening instrument for eating disorders, in a general population sample.
  
  
  METHODS
  A random sample of 1863 Finnish young adults was approached with a questionnaire that contained several screens for mental health interview, including the SCOFF. The questionnaire was returned by 1316 persons. All screen positives and a random sample of screen negatives were invited to SCID interview. Altogether 541 subjects participated in the SCID interview and had filled in the SCOFF questionnaire. We investigated the validity of the SCOFF in detecting current eating disorders by calculating sensitivity, specificity, and positive and negative predictive values (PPV and NPV) for different cut-off scores. We also performed a ROC analysis based on these 541 persons, of whom nine had current eating disorder.
  
  
  RESULTS
  The threshold of two positive answers presented the best ability to detect eating disorders, with a sensitivity of 77.8%, a specificity of 87.6%, a PPV of 9.7%, and a NPV of 99.6%. None of the subjects with current eating disorder scored zero points in the SCOFF.
  
  
  CONCLUSIONS
  Due to its low PPV, there are limitations in using the SCOFF as a screening instrument in unselected population samples. However, it might be used for ruling out the possibility of eating disorders.
authors.affiliation: Department of Mental Health and Substance Abuse Services, National Institute for Health and Welfare, Helsinki, Finland. sini.lahteenmaki@helsinki.fi
authors.forename: Sini
authors.initials: S
authors.lastname: Lähteenmäki
authors.forename: Terhi
authors.initials: T
authors.lastname: Aalto-Setälä
authors.forename: Jaana T
authors.initials: JT
authors.lastname: Suokas
authors.forename: Suoma E
authors.initials: SE
authors.lastname: Saarni
authors.forename: Jonna
authors.initials: J
authors.lastname: Perälä
authors.forename: Samuli I
authors.initials: SI
authors.lastname: Saarni
authors.forename: Hillevi
authors.initials: H
authors.lastname: Aro
authors.forename: Jouko
authors.initials: J
authors.lastname: Lönnqvist
authors.forename: Jaana M
authors.initials: JM
authors.lastname: Suvisaari
mesh_terms: D000328:Adult; D001068:Feeding and Eating Disorders / Q000175:diagnosis*; D005260:Female; D005387:Finland; D006801:Humans; D008297:Male; D011569:Psychiatric Status Rating Scales; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires; D055815:Young Adult