Schizophrenia-primary affective disorder discrimination. I. Development of a data-based diagnostic index.
A nine-variable diagnostic measure for discriminating schizophrenia and primary affective disorder was developed. The nine variables, which were selected by discriminant function analysis, reflect past and current symptomatology, duration of symptoms, and behavioral ratings. The measure was cross-validated by a jackknife procedure that accurately classified nine of ten of the cases. Such accuracy suggests that brief, data-based diagnostic instruments have considerable promise as practical checks of clinical diagnoses.
D000328:Adult; D001714:Bipolar Disorder / Q000175:diagnosis* / Q000523:psychology; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D012559:Schizophrenia / Q000175:diagnosis*; D012565:Schizophrenic Psychology