Development and validation of an intrinsic capacity composite score in the Longitudinal Aging Study Amsterdam: a formative approach.

ABSTRACT:

Background

Intrinsic capacity (IC) defined by the WHO refers to the composite of five domains of capacities. So far, developing and validating a standardized overall score of the concept have been challenging partly because its conceptual framework has been unclear. We consider that a person's IC is determined by its domain-specific indicators suggesting a formative measurement model.

Aims

To develop an IC score applying a formative approach and assess its validity.

Methods

The study sample (n = 1908) consisted of 57-88-year-old participants from the Longitudinal Aging Study Amsterdam (LASA). We used logistic regression models to select the indicators to the IC score with 6-year functional decline as an outcome. An IC score (range 0-100) was constructed for each parti

SUBMITTER: Koivunen K 

PROVIDER: S-EPMC10115715 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature