Concurrent and convergent validity of the mobility- and multidimensional-hierarchical disability categorization models with physical performance in community older adults
Journal
Archives of Gerontology and Geriatrics
Journal Volume
58
Journal Issue
2
Pages
257-262
Date Issued
2014
Author(s)
Abstract
A valid, time-efficient and easy-to-use instrument is important for busy clinical settings, large scale surveys, or community screening use. The purpose of this study was to validate the mobility hierarchical disability categorization model (an abbreviated model) by investigating its concurrent validity with the multidimensional hierarchical disability categorization model (a comprehensive model) and triangulating both models with physical performance measures in older adults. 604 community-dwelling older adults of at least 60 years in age volunteered to participate. Self-reported function on mobility, instrumental activities of daily living (IADL) and activities of daily living (ADL) domains were recorded and then the disability status determined based on both the multidimensional hierarchical categorization model and the mobility hierarchical categorization model. The physical performance measures, consisting of grip strength and usual and fastest gait speeds (UGS, FGS), were collected on the same day. Both categorization models showed high correlation (γs=0.92, p<0.001) and agreement (kappa=0.61, p<0.0001). Physical performance measures demonstrated significant different group means among the disability subgroups based on both categorization models. The results of multiple regression analysis indicated that both models individually explain similar amount of variance on all physical performances, with adjustments for age, sex, and number of comorbidities. Our results found that the mobility hierarchical disability categorization model is a valid and time efficient tool for large survey or screening use. ? 2013 Elsevier Ireland Ltd.
Subjects
Aging; Hierarchical disability; Mobility disability; Validity
SDGs
Other Subjects
adult; age; aged; article; comorbidity; concurrent validity; controlled study; convergent validity; daily life activity; disability severity; fastest gait speed; female; gait; grip strength; human; Instrumental Activities of Daily Living; male; middle aged; mobility hierarchical disability categorization model; model; multidimensional hierarchical disability categorization model; multiple regression; normal human; physical disability; physical mobility; physical performance; priority journal; self report; sex; usual gait speed; very elderly; Activities of Daily Living; Aged; Aged, 80 and over; Aging; Analysis of Variance; Comorbidity; Disability Evaluation; Disabled Persons; Female; Gait; Geriatric Assessment; Health Surveys; Humans; Male; Middle Aged; Motor Activity; Psychometrics; Regression Analysis; Reproducibility of Results; Self Report
Type
journal article