Computerized self-assessment of psychosis severity questionnaire [COSAPSQ] in schizophrenia: Preliminary results

Robert G. Stern, Ronald Fudge, Cecile E. Sison, Edward R. Allan, James Crichton, Miklos Losonczy

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


We attempted to develop and validate a computer-driven patient serf- rated questionnaire [COSAPSQ] which should provide a reliable, rapid, and inexpensive method to assess symptom severity in patients with psychosis in general and with schizophrenia in particular. After giving informed consent patients with DSM-IV schizophrenia or schizoaffective disorder were interviewed and rated on PANSS and CGI. Subsequently patients completed the COSAPSQ questionnaire (61 multiple choice questions) in the presence of an observer. The analysis of the first 29 rating sets showed that patients with CGI scores of 3-6 completed the questionnaire in a mean time of 21.6 minutes. One-way analysis of variance of COSAPSQ total scores by CGI ratings was highly significant (p<.001). COSAPSQ total scores correlated well with PANSS total, general, and positive scores and with CGI (all r=-.6-.7; p<.005). The next versions of the questionnaire will require some adjustments: overall fewer questions, improved assessment of negative symptoms, and improved graphic presentation.

Original languageEnglish
Pages (from-to)9-12
Number of pages4
JournalPsychopharmacology Bulletin
Issue number1
StatePublished - 1998


  • Computerized questionnaire
  • Multiple choice
  • Schizophrenia
  • Self- assessment
  • Symptom severity


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