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ROCHA LFDD, HERNANDEZ JAE, FALCONE EMDO. Latent structure evidence of the Depression, Anxiety and Stress Scales - Short Form. ESTUDOS DE PSICOLOGIA (CAMPINAS) 2021. [DOI: 10.1590/1982-0275202138e190103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Abstract This study aimed to investigate the psychometric properties of the Depression, Anxiety and Stress Scales - Short Form in a Brazilian sample. The instrument was answered online by 250 university students. The following models were tested through Confirmatory Factor Analysis: one-dimensional, three oblique factors, hierarchical, and bifactor. The estimated indices showed a better adjustment for a bifactor model composed of three specific factors and one global factor. Additional statistical analysis, such as explained common variance and omega hierarchical estimates, indicated that the measure is predominantly one-dimensional. The results also indicated evidence of convergent validity (Average Extracted Variance between 0.48 and 0.60), internal consistency (Cronbach's alpha between 0.87 and 0.94) and temporal reliability of the instrument (Intraclass Correlation Coefficient between 0.64 and 0.74).
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Affiliation(s)
- Sergio Alexis Dominguez-Lara
- Instituto de Investigación de Psicología, Universidad de San Martín de Porres, Lima, Perú. Address: Instituto de Investigación de Psicología, Universidad de San Martín de Porres, Av. Tomás Marsano 242 (Piso 5), Lima 34, Perú.
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