The Obsessive-Compulsive Inventory: Development and validation of a short version.

TLDR

The Obsessive‑Compulsive Inventory (OCI) is a psychometrically sound, theoretically driven self‑report measure for obsessive‑compulsive disorder. The study aimed to develop a revised, shorter version of the OCI (OCI‑R). The authors evaluated the OCI‑R’s reliability and validity across 215 OCD patients, 243 other anxiety patients, and 677 nonanxious controls. The OCI‑R, comprising 18 items and six subscales, retained excellent psychometric properties, distinguished OCD from non‑OCD groups, and ROC analyses confirmed its utility as a diagnostic screening tool with empirically derived cut‑scores.

Abstract

This article reports on the development of a revised version of the Obsessive-Compulsive Inventory (OCI; E. B. Foa, M. J. Kozak, P. Salkovskis, M. E. Coles, & N. Amir, 1998), a psychometrically sound, theoretically driven, self-report measure. The revised OCI (OCI-R) improves on the parent version in 3 ways: It eliminates the redundant frequency scale, simplifies the scoring of the subscales, and reduces overlap across subscales. The reliability and validity of the OCI-R were examined in 215 patients with obsessive-compulsive disorder (OCD), 243 patients with other anxiety disorders, and 677 nonanxious individuals. The OCI-R, which contains 18 items and 6 subscales, has retained excellent psychometric properties. The OCI-R and its subscales differentiated well between individuals with and without OCD. Receiver operating characteristic (ROC) analyses demonstrated the usefulness of the OCI-R as a diagnostic tool for screening patients with OCD, utilizing empirically derived cutscores.