Publication: The Padua Inventory–Washington State University Revision of Obsessions and Compulsions: A Reliability Generalization Meta-Analysis
Authors
Rubio-Aparicio, María ; Núñez-Núñez, Rosa M. ; Sánchez-Meca, Julio ; López-Pina, José Antonio ; Marín-Martínez, Fulgencio ; López-López, José Antonio
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Publisher
Taylor & Francis Group
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DOI
https://doi.org/10.1080/00223891.2018.1483378
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info:eu-repo/semantics/article
Description
© 2020 Taylor & Francis.
This document is the published version of a published work that appeared in final form in Journal of Personality Assessment,
To access the final work, see DOI: https://doi.org/10.1080/00223891.2018.1483378
Abstract
The Padua Inventory–Washington State University Revision (PI–WSUR) is a frequently used test to
assess obsessive–compulsive symptoms in screening and clinical contexts. A reliability generalization
meta-analysis was carried out to estimate the average reliability of the PI–WSUR scores and
its subscales and to search for characteristics of the studies that can explain the heterogeneity
among reliability coefficients. A total of 124 independent samples reported some coefficient alpha
or test–retest correlation with the data at hand for the PI–WSUR scores. The average internal consistency
reliability of the PI–WSUR total scores was .929 (95% CI [.922, .936]), and for the subscales,
the means ranged from .792 to .900. The test–retest reliability for PI–WSUR total scores was .767
(95% CI [.700, .820]), with the subscales ranging from .540 to .790. Moderator analyses revealed a
positive relationship between the standard deviation of PI–WSUR total scores and alpha coefficients,
as well as higher reliability estimates for the original version of the test and for studies
from North America. The reliability induction rate for the PI–WSUR was 53.7%. Regarding reliability,
the PI–WSUR ranks among the best scales for assessing obsessive–compulsive symptoms. Internal
consistency reliability was excellent for the PI–WSUR total score and good for the subscales.
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Citation
Journal of Personality Assessment, 102:1, 113-123
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