COMORBIDITY AMONG THE PERSONALITY-DISORDERS IN DSM-III-R

The aim of the present study was to elucidate the presence of comorbid ity among the separate personality disorders (PD) in DSM-III-R. By mea ns of a modified version of the SCID Screen questionnaire, data concer ning 95 reported criteria for PD were collected from 176 controls and 388 patients. Eighty-five Ss had a Cluster A personality disorder; 91. 8% of the Ss had only one PD within the Cluster. However, the number o f criteria fulfilled for the three PD correlated significantly (r = 0. 29-0.65). One-hundred and eighteen Ss had a Cluster B PD, 73.7% had on ly one Cluster B PD. The intercorrelations between number of criteria fulfilled were all significant (r = 0.30-0.57). One-hundred and twenty -seven Ss had a Cluster C PD. Only 65.4% had only one PD within the Cl uster. All intercorrelations between number of fulfilled criteria were significant (r = 0.39-0.66). Altogether 198 Ss had at least one PD. O nly 52.0% had a PD within only one of the Clusters. Thus the comorbidi ty between the three Clusters is even higher then the comorbidity with in the Clusters.