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Validation study of a reduced version of the Geriatric Depression Scale in Portugal

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Resumo:The validity of the short Geriatric Depression Scale (GDS) version (5 items) was assessed in two samples of older adults aged 60 or more years. Concurrent validity, specificity, and sensitivity were obtained in a convenience sample of 66 individuals (mean of 70 years) by comparison to the Beck Depression Inventory (IDB-II). Factorial analysis was conducted in a population-based sample of 1023 participants (mean of 71 years). The 5-item version of the Geriatric Depression Scale presented adequate internal consistency values and good correlation results with the IDB-II. These results suggest its reliability and adequate sensitivity, and specificity values for screening for depressive symptoms in the elderly population. The results obtained by the Confirmatory Factor Analysis (CFA) suggest that the one-factor model does not have the desired characteristics – one of the items (item 4) may have a lower discriminative power and a better fit in the model obtained by the CFA for 4 items was observed.
Autores principais:Santos, Ana João
Outros Autores:Nunes, Baltazar; Kislaya, Irina; Gil, Ana Paula; Ribeiro, Oscar
Assunto:Geriatric Depression Scale, Reliability, Validity, Depression, Elderly. Escala de Depressão Geriátrica, Fiabilidade, Validade, Depressão, Pessoas idosas.
Ano:2019
País:Portugal
Tipo de documento:artigo
Tipo de acesso:unknown
Instituição associada:Instituto Universitário de Ciências Psicológicas Sociais e da Vida
Idioma:português
Origem:Análise Psicológica
Descrição
Resumo:The validity of the short Geriatric Depression Scale (GDS) version (5 items) was assessed in two samples of older adults aged 60 or more years. Concurrent validity, specificity, and sensitivity were obtained in a convenience sample of 66 individuals (mean of 70 years) by comparison to the Beck Depression Inventory (IDB-II). Factorial analysis was conducted in a population-based sample of 1023 participants (mean of 71 years). The 5-item version of the Geriatric Depression Scale presented adequate internal consistency values and good correlation results with the IDB-II. These results suggest its reliability and adequate sensitivity, and specificity values for screening for depressive symptoms in the elderly population. The results obtained by the Confirmatory Factor Analysis (CFA) suggest that the one-factor model does not have the desired characteristics – one of the items (item 4) may have a lower discriminative power and a better fit in the model obtained by the CFA for 4 items was observed.