Department of Occupational Therapy, College of Software and Digital Healthcare Convergence, Yonsei University, 135 Backun hall, 1 Yeonsedae-gil, Wonju-si, Gangwon-do, 26493, Republic of Korea.
Division of Rehabilitation Sciences, University of Texas Medical Branch, Galveston, Texas, 77555, USA.
Qual Life Res. 2022 Jan;31(1):281-291. doi: 10.1007/s11136-021-02909-y. Epub 2021 Jun 12.
The purpose of this study was to use modern measurement techniques and create a precise functional status metric for Asian adults.
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.
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 ([Formula: see text] = 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).
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.
本研究旨在利用现代测量技术为亚洲成年人创建精确的功能状态衡量标准。
研究对象包括来自 2012 年健康与退休研究（n=211）的亚裔美国成年人、来自中国健康与退休纵向研究（n=13649）的中国成年人以及来自韩国老龄化纵向研究（n=7486）的韩国成年人。采用来自三个数据库的九项自我护理和移动项目的 Rasch 常见项目均衡方法，创建跨三个亚洲成年人群体的身体功能衡量标准。
创建的身体功能衡量标准包括 23 项自我护理和移动任务，具有可接受的心理测量学特性（单维、局部独立性、无拟合不良、无差异项目功能）。在三个亚洲成年人群体中，估计的身体功能存在显著的组间差异（[Formula: see text]=445.21，p<0.0001）。与中国（4.15 对数单位）和韩国（3.32 对数单位）成年人相比，美籍亚裔成年人（5.16 对数单位）的身体功能更好。
由于该结果衡量标准是用具有代表性的亚洲人群样本进行校准的，因此，这种推导出的身体功能衡量标准可用于三个国家之间的跨国比较。使用这种精确的功能状态衡量标准可以帮助识别影响其他亚洲国家（中国和韩国）健康结果的因素。这具有许多潜在的好处，例如国际残疾监测和与健康相关的政策制定、改善共享决策以及国际研究结果的综合分析。
