TY - JOUR
T1 - Development of a physical function outcome measure to harmonize comparisons between three Asian adult populations
AU - Hong, Ickpyo
AU - Hreha, Kimberly P.
AU - Hilton, Claudia L.
AU - Lee, Mi Jung
N1 - Funding Information:
We thank for Kenneth Ottenbacher, PhD, OTR (University of Texas Medical Branch) and Rebeca Wong, PhD (University of Texas Medical Branch) and Timothy A. Restarter, PhD, OTR (University of Texas Health Science Center at San Antonio) for serving as mentors on this study. Sarah Toombs Smith, PhD, ELS (University of Texas Medical Branch) provided assistance in proofreading and editing the manuscript. John Michael Linacre, PhD (Research Director, Winsteps.com) provided technical supports. The authors would like to thank other members of the research team for their efforts, including Ms. Suyeong Bae and Mr. Sanghun Nam.
Funding Information:
This research was supported in part by Grant # K12 HD055929 from the National Institutes of Health (NIH) and Grant # P30-AG024832 from the University of Texas Medical Branch (UTMB) Claude D. Pepper Older American Independence Centers (OAICS). Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the NIH nor UTMB Claude D. Pepper OAICS. This research was also supported by the BK21 FOUR (Fostering Outstanding Universities for Research) funded by the Ministry of Education (MOE) of the Republic of Korea and National Research Foundation of Korea (NRF) (Big Data Specialized Education and Research Team for Cognitive Health and Social Integration of Community-Dwelling Older Adults). The Health and Retirement Study (HRS) is sponsored by the National Institute on Aging (NIA U01AG009740) and the Social Security Administration.
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
PY - 2022/1
Y1 - 2022/1
N2 - Purpose: The purpose of this study was to use modern measurement techniques and create a precise functional status metric for Asian adults. Methods: The study subjects included Asian American adults from the 2012 Health and Retirement Study (n = 211), Chinese adults in the China Health and Retirement Longitudinal Study (n = 13,649), and Korean adults in the Korean Longitudinal Study of Aging (n = 7,486). The Rasch common-item equating method with nine self-care and mobility items from the three databases were used to create a physical function measure across the three Asian adult populations. Results: The created physical function measure included 23 self-care and mobility tasks and demonstrated acceptable psychometric properties (unidimensional, local independence, no misfit, no differential item functioning). A significant group difference in the estimated physical function across the three Asian adult populations (F2 , 21242 = 445.21, p < 0.0001) was identified. The American Asian adults (5.16 logits) had better physical function compared to the Chinese (4.15 logits) and Korean adults (3.32 logits). Conclusion: Since the outcome measure was calibrated with the population-representative Asian samples, this derived physical function measure can be used for cross-national comparisons between the three countries. Using this precise functional status metric can help to identify factors that influence health outcomes in other Asian countries (China and Korea). This has the potential to generate numerous benefits, such as international disability monitoring and health-related policy development, improved shared decision making, and international syntheses of research findings.
AB - Purpose: The purpose of this study was to use modern measurement techniques and create a precise functional status metric for Asian adults. Methods: The study subjects included Asian American adults from the 2012 Health and Retirement Study (n = 211), Chinese adults in the China Health and Retirement Longitudinal Study (n = 13,649), and Korean adults in the Korean Longitudinal Study of Aging (n = 7,486). The Rasch common-item equating method with nine self-care and mobility items from the three databases were used to create a physical function measure across the three Asian adult populations. Results: The created physical function measure included 23 self-care and mobility tasks and demonstrated acceptable psychometric properties (unidimensional, local independence, no misfit, no differential item functioning). A significant group difference in the estimated physical function across the three Asian adult populations (F2 , 21242 = 445.21, p < 0.0001) was identified. The American Asian adults (5.16 logits) had better physical function compared to the Chinese (4.15 logits) and Korean adults (3.32 logits). Conclusion: Since the outcome measure was calibrated with the population-representative Asian samples, this derived physical function measure can be used for cross-national comparisons between the three countries. Using this precise functional status metric can help to identify factors that influence health outcomes in other Asian countries (China and Korea). This has the potential to generate numerous benefits, such as international disability monitoring and health-related policy development, improved shared decision making, and international syntheses of research findings.
KW - Adults
KW - Cross-national comparison
KW - Health surveys
KW - Outcome measure development
KW - Rasch model
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U2 - 10.1007/s11136-021-02909-y
DO - 10.1007/s11136-021-02909-y
M3 - Article
C2 - 34120274
AN - SCOPUS:85107759714
SN - 0962-9343
VL - 31
SP - 281
EP - 291
JO - Quality of Life Research
JF - Quality of Life Research
IS - 1
ER -