Responsiveness and other psychometric properties of the Y-BOCS Severity Scale-Second Edition (Y-BOCS-II) in a Dutch clinical sample

Clin Psychol Psychother. 2022 Jan 26. doi: 10.1002/cpp.2715. Online ahead of print.ABSTRACTThe Yale-Brown Obsessive-Compulsive Scale (Y-BOCS) is a widely used clinician-rated interview to assess the presence and severity of obsessive-compulsive disorder (OCD). The scale is revised (Y-BOCS-II) to overcome several psychometric limitations, for example by extending the scoring for better discrimination within higher severity levels. The aim of the present study was to examine the responsiveness and other psychometric properties of the Y-BOCS-II Severity Scale in a Dutch clinical sample. The Y-BOCS-II is translated into Dutch (Y-BOCS-II) and administered to 110 patients seeking therapy for OCD. This was done twice, before and after treatment. The original Y-BOCS was simultaneously rated. Self-report measures regarding depression, symptom severity and OCD symptoms were assessed. The Y-BOCS-II has a good internal consistency (Cronbach's α=0.84), test-retest (ICC=0.89) and inter-rater reliability (ICC=0.98). The construct validity proved to be modest to good. The responsiveness over time was in favour of the Y-BOCS-II, compared with the YBOCS-I, particularly in the moderate-severely affected OCD patients. The Y-BOCS-II severity scale is a reliable and valid instrument for accurately assessing the severity of OCD symptoms and for measuring treatment-induced change. This second version also has clinical and psychometric advantages over the YBOCS-I. When these findings are sufficientl...
Source: Clinical Psychology and Psychotherapy - Category: Psychiatry Authors: Source Type: research