Schizophrenia, schizotypal and delusional disorders (F2). Results from the ICD-10 field trial of the Diagnostic Criteria for Research in German-speaking countries.

The results of the ICD-10 field trial of the Diagnostic Criteria for Research in German-speaking countries concerning section F2, "Schizophrenia, schizotypal and delusional disorders', are presented. From a total of 39 cases (written case reports and video tapes) 5 met the criteria for schizophrenia (F20) with 201 ratings. The majority of clinicians rated the ease of diagnosis, confidence of diagnosis, and goodness of fit positive. The reliability of the 2-character diagnoses was excellent (F2; kappa = 0.88), as was the case for the category schizophrenia (F20; kappa = 0.89) and was higher than in the comparable study concerning the Clinical Diagnostic Guidelines.