Discriminative capacity for functional impairment of the Personality Inventory for DSM-5 Short Form in patients with substance use disorder

Abstract

The evaluation of comorbid personality disorders in consumer patients is of special relevance in the clinical setting. This work analyzes the discriminative capacity of the PID-5 Personality Inventory to detect functional deterioration in a group of patients with SUD. In addition, the use of a functional and a normative criterion is compared to establishing the cut-off points that represent pathological functioning in the facets defined in the Alternative Personality Model DSM-5.178 patients with SUD attending addiction outpatient treatment centers completed the PID-5 and the World Health Organization's Assessment of Disability questionnaire (WHODAS 2.0).The analysis of ROC curves using as a criterion of moderate to severe disability a score greater than 25 on the WHODAS shows AUC values between .50 and .78. 6 non-discriminatory capacity facets of functional disability: attention seeking, grandiosity, avoidance of intimacy, manipulation, restricted affectivity and rigid perfectionism. The cut-off points obtained using the functional criteria are higher in all the faces that are discriminative of functional deterioration with respect to those proposed using normative criteria.The PID-5 has a good discriminative capacity for dysfunctionality implemented by WHODAS 2.0 in most facets, especially in the facets linked to the negative affectivity domain. Considered globally, the use of normative criteria is possibly more suitable for population epidemiological studies, while functional criteria could be more useful in clinical samples.