Hierarchical structure in the activities of daily living and trajectories of disability prior to death in elderly Chinese individuals.

ABSTRACT:

Background

The global burden of disability continues to increase. Understanding the hierarchical structure of activities of daily living (ADL) and the trajectories of disability of elderly individuals is pivotal to developing early interventions.

Purpose

To determine the hierarchical structure of the ability of Chinese elderly individuals to perform ADL and further describe the trajectories of disability prior to death.

Methods

Longitudinal item response theory model (LIRT) was constructed for 28,345 elderly participants in the Chinese Longitudinal Healthy Longevity Survey, in which ADL were measured using the Katz scale from 1998 to 2018, until the participants' death. Two difficulty parameters (κ_-partial and κ_-total) were used in the LIRT defin

SUBMITTER: Han Y 

PROVIDER: S-EPMC8487510 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature