Developing and validating intrinsic capacity scores in early adulthood and midlife: 15-year follow-up from the Northern Finland Birth Cohort 1966.
BACKGROUND Intrinsic capacity (IC) - the aggregate of physical and mental capacities - has been studied in older adults, but research on its profile and prognostic value earlier in adulthood is scarce. Existing IC measurement approaches also lack theoretical alignment, psychometric evaluation, and validation. We theref...