Psychometric evaluation of a parent-rating and self-rating inventory for pediatric obsessive-compulsive disorder: German OCD Inventory for Children and Adolescents (OCD-CA)

Abstract

Background This study assesses the psychometric properties of the German version of the Padua Inventory-Washington State University Revision for measuring pediatric OCD. Methods The parent-rating and self-rating inventory is assessed in a clinical sample (CLIN: n = 342, age range = 6–18 years) comprising an OCD subsample (OCDS: n = 181) and a non-OCD clinical subsample (non-OCD: n = 161), and in a community sample (COS: n = 367, age range = 11–18 years). Results An exploratory factor analysis yielded a four-factor solution: (1) Contamination & Washing, (2) Catastrophes & Injuries, (3) Checking, and (4) Ordering & Repeating. Internal consistencies of the respective scales were acceptable to excellent across all samples, with the exception of the self-report subscale Ordering and Repeating in the community sample. The subscales correlated highly with the total score. Intercorrelations between the subscales were mainly r ≤ .70, indicating that the subscales were sufficiently independent of each other. Convergent and divergent validity was supported. Participants in the OCD subsample scored significantly higher than those in the non-OCD clinical subsample and the COS on all scales. In the COS, self-rating scores were significantly higher than parent-rating scores on all scales, while significant mean differences between informants were only found on two subscales in the OCD subsample. Conclusion The German version of the Padua Inventory-Washington State University Revision for measuring pediatric OCD is a promising, valid and reliable instrument to assess self-rated and parent-rated pediatric OCD symptoms in clinical and non-clinical (community) populations. Electronic supplementary material The online version of this article (10.1186/s13034-019-0286-z) contains supplementary material, which is available to authorized users.

Extended treatment of multimodal cognitive behavioral therapy in children and adolescents with obsessive–compulsive disorder improves symptom reduction: a within-subject design

“…Moreover, differences between outcome measures have to be taken into account. While the clinician-rated CY-BOCS-D focuses on global OCD severity (including impairment, resistance and control), the patient- and parent-rated OCD-CA focuses on OCD symptoms in different domains without considering impairment, resistance and control [ 49 ].…”

Reliability and Validity of the Chinese Version of the Perceived Access to Health Care Questionnaire

“…An R value < 0.40 indicates a low correlation, 0.40 ≤ R ≤ 0.70 indicates a moderate correlation, and R > 0.70 indicates a high correlation. The criteria for deleting entries are R < 0.40 or without statistical significance (14). If there is a significant improvement in Cronbach's α coefficient of the total table after deleting a certain item, it is considered that the measured attributes of that item are different from the other items and should be considered for removal.…”