Validation of a brief seven-item response bias-free geriatric depression scale.

Abstract

OBJECTIVE Shortened versions of various depression scales have typically been based on conventional techniques such as factor analysis, without simultaneously considering the removal of culturally biased items that show differential item functioning (DIF). The authors recently showed that eight items in the 15-item Geriatric Depression Scale (GDS-15… (More)
DOI: 10.1097/JGP.0b013e3181f61ec9

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