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Psychometric properties of the Hoarding Rating Scale-Interview

Research paper by David F. Tolin, Christina M. Gilliam; Elizabeth Davis; Kristen Springer; Hannah C. Levy; Randy O. Frost; Gail Steketee; Michael C. Stevens

Indexed on: 28 Feb '18Published on: 02 Feb '18Published in: Journal of Obsessive-Compulsive and Related Disorders



Abstract

Publication date: January 2018 Source:Journal of Obsessive-Compulsive and Related Disorders, Volume 16 Author(s): David F. Tolin, Christina M. Gilliam, Elizabeth Davis, Kristen Springer, Hannah C. Levy, Randy O. Frost, Gail Steketee, Michael C. Stevens The present study tested the psychometric properties of an expanded version of the Hoarding Rating Scale (HRS-I), a semistructured interview for hoarding disorder (HD). Eighty-seven adults with HD and 44 healthy control (HC) participants were assessed using the HRS-I and completed a battery of self-report measures of HD severity, negative affect, and functional impairment. All interviews were audio recorded. From the HD participants, 21 were randomly selected for inter-rater reliability (IRR) analysis and 11 for test-retest reliability (TRR) analysis. The HRS-I showed excellent internal consistency (α = 0.87). IRR and TRR in the HD sample were good (intra-class coefficients = 0.81 and 0.85, respectively). HRS-I scores correlated strongly with scores on the self-report Saving Inventory-Revised (SI-R); partial correlations indicated that the HRS-I clutter, difficulty discarding, and acquiring items correlated significantly and at least moderately with corresponding SI-R subscales, when controlling for the other SI-R subscales. The HD group scored significantly higher on all items than did the HC group, with large effect sizes (d = 1.28–6.58). ROC analysis showed excellent sensitivity (1.00) and specificity (1.00) for distinguishing the HD and HC groups with a cutoff score of 11. Results and limitations are discussed in light of prior research.