title: Self-reported psychotic experiences in the general population: a valid screening tool for DSM-III-R psychotic disorders?
abstract: OBJECTIVE
  To examine the diagnostic value of self-reported psychotic-like experiences for DSM-III-R psychotic disorders.
  
  
  METHODS
  A general population sample of 7076 subjects aged 18-64 years was interviewed with the Composite International Diagnostic Interview (CIDI) and, if there was evidence of psychotic experiences, the Structured Clinical Interview for DSM-III-R.
  
  
  RESULTS
  The probability of having a psychotic disorder increased in a dose-response fashion with the level of self-reported psychotic experiences, but individual CIDI psychotic experience ratings had relatively low post-test probabilities (PPs) (range: 5.1-26.5%). However, limiting the sample to individuals who had been in contact with mental health services substantially improved PPs (range: 13.3-43.1%).
  
  
  CONCLUSIONS
  Screening for psychosis in the population carries a high risk of stigmatization in false-positive cases and violation of the right 'not to know' in true-positive cases. However, in mental health care users, self-reported psychotic experiences may be a useful screening tool in individuals who have already developed help-seeking.
authors.affiliation: Department of Psychiatry and Neuropsychology, EURON, azM/Mondriaan/Riagg/Vijverdal Academic Centre, Maastricht University, Maastricht, The Netherlands.
authors.forename: M S S
authors.initials: MS
authors.lastname: Hanssen
authors.forename: R V
authors.initials: RV
authors.lastname: Bijl
authors.forename: W
authors.initials: W
authors.lastname: Vollebergh
authors.forename: J
authors.initials: J
authors.lastname: van Os
mesh_terms: D000328:Adult; D000368:Aged; D005189:False Positive Reactions; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D009426:Netherlands / Q000453:epidemiology; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology*; D012307:Risk Factors; D012720:Severity of Illness Index; D013997:Time Factors