BACKGROUND The Operational Criteria Checklist (OPCRIT) generates diagnoses according to 12 operational diagnostic systems (e.g. DSM-III, DSM-III-R, Research Diagnostic Criteria, ICD-10).
AIMS To examine the agreement between diagnoses generated by the OPCRIT, as completed by the interviewer, with a best-estimate lifetime procedure using the OPCRIT.
METHOD Subjects came from large multi-generational bipolar or schizophrenia pedigrees (n = 100), and from a sample of unrelated subjects with schizophrenia (n = 40). We analysed the diagnostic agreement between OPCRIT diagnoses generated by the interviewer and our best-estimate OPCRIT diagnoses, according to DSM-III-R and ICD-10, using Cohen kappa statistics.
RESULTS Excellent agreement was found between interviewer OPCRIT diagnoses and OPCRIT diagnoses made by the best-estimate lifetime consensus procedure for DSM-III-R (kappa = 0.83) and ICD-10 (kappa = 0.81).
CONCLUSIONS Results suggest that this procedure for diagnostic assessment is an efficient alternative to classic best-estimate diagnosis procedures.