A Reliability Generalization Study of the Brief Symptom Inventory—18

• In Event: 53.082 - Poster Session 10
  In Poster Session: 53.082-5 - Meta-Analysis: New Methods and Reviews

Abstract

A reliability generalization analysis was performed on primary studies of the Brief Symptom Inventory–18 to examine the variability in Cronbach’s alpha reliability estimates reported in the literature. PsycInfo was consulted to collect articles. The reported Cronbach’s alphas were obtained to assess whether defined moderator variables affected reliability estimates. Out of the 161 references located, 48 studies met the selection criteria. The mean reliabilities were 0.91, 0.77, 0.85, and 0.83 for the Global Severity Index (GSI), Somatic, Depression, and Anxiety subscale respectively. The moderator analyses led to a predictive model where the type of population (clinical vs. nonclinical) for the GSI, and gender for the Somatic subscale were significant. Clinical implications of the results are discussed.

Authors

• Dareen Alzahrani

• Antonio Olmos, University of Denver

• Kathy E. Green, University of Denver