Measurement invariance of the Center for Epidemiologic Studies Depression Scale in parents of individuals with disabilities

We aimed to verify the factor model and measurement invariance of the abbreviated Center for Epidemiologic Studies Depression Scale by conducting a confirmatory factor analysis using data from 761 parents of individuals with intellectual disabilities who completed the scale as part of the 2011 Survey on the Actual Conditions of Individuals with Developmental Disabilities, South Korea, and 7,301 participants from the general population who completed the scale as part of the 2011 Welfare Panel Study and Survey by the Ministry of Health and Welfare, South Korea. We used fit indices to assess data reliability and Amos 22.0 for data analysis. According to the results, the 4-factor model had an appropriate fit to the data and the regression coefficients were significant. However, the chi-square difference test result was nonsignificant; therefore, the metric invariance model was the most appropriate measurement invariance model for the data. Implications of the findings are discussed.