title: Statistical impact of truncated sampling or alteration of administration: the case of the Geriatric Depression Scale.
authors: T L
authors: TL
authors: Brink
mesh_terms: D000368:Aged; D015982:Bias; D003866:Depressive Disorder / Q000453:epidemiology*; D015577:Geriatric Assessment; D006801:Humans; D008609:Mental Status Schedule / Q000592:standards*; D012494:Sampling Studies