Criterion validity of brief, comprehensive, and latent measures of intrinsic capacity against frailty, disability, and mortality in older adults.
BACKGROUND Intrinsic capacity (IC), the composite of physical and mental capacities, underpins the WHO Integrated Care for Older People (ICOPE) program. IC may be measured as a brief screen, a comprehensive assessment, or a latent factor score; whether the simpler measures retain the prognostic information of the compl...