The main purpose of this study is the adaptation and psychometric validation of the Geriatric Depression Scale (GDS) for the Portuguese population. The analyses of temporal (a (27 items) = .995) and internal (.91) consistencies, inter-rater reliability (Kappa = .87), and concur- rent (.83) and factorial (3 factor) validities demonstrate that GDS is highly reliable as a screening instrument for geriatric depress...
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