Gerontologist. 2023 Mar 2:gnad021. doi: 10.1093/geront/gnad021. Online ahead of print.
BACKGROUND AND OBJECTIVES: The Veterans RAND 12-Item Health Survey (VR-12) is a generic patient-reported outcome measure of physical and mental health status. An adapted version of the VR-12 was developed for use with older adults living in long-term residential care (LTRC) homes in Canada: VR-12 (LTRC-C). This study aimed to evaluate the psychometric validity of the VR-12 (LTRC-C).
RESEARCH DESIGN AND METHODS: Data for this validation study were collected via in-person interviews for a province-wide survey of adults living in LTRC homes across British Columbia (N = 8,657). Three analyses were conducted to evaluate validity and reliability: 1) confirmatory factor analyses (CFA) were conducted to validate the measurement structure, 2) correlations with measures of depression, social engagement and daily activities were examined to evaluate convergent and discriminant validity and 3) Cronbach’s alpha (r) statistics were obtained to evaluate internal consistency reliability.
RESULTS: A measurement model with two correlated latent factors (representing physical health and mental health), four cross-loadings, and four correlated items resulted in acceptable fit (Root Mean Square Error of Approximation = .07; Comparative Fit Index = .98). Physical and mental health were correlated in expected directions with measures of depression, social engagement, and daily activities, though magnitudes of the correlations were quite small. Internal consistency reliability was acceptable for physical and mental health (r >0.70).
DISCUSSION AND IMPLICATIONS: This study supports the use of the VR-12 (LTRC-C) to measure perceived physical and mental health among older adults living in LTRC homes.
PMID:36866495 | DOI:10.1093/geront/gnad021