Hong Ickpyo, Simpson Annie N, Simpson Kit N, Brotherton Sandra S, Velozo Craig A
Ickpyo Hong, Department of Occupational Therapy, Office 3.714, School of Health Professions, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555-1142, USA,
J Appl Meas. 2018;19(2):114-128.
This study compared disability levels between community-dwelling adults in the United States and South Korea using two national surveys of the United States and Korean National Health and Examination Survey (NHANES and KNHANES). The Rasch common-item equating method was used to create the same measurement framework and compared average disability levels. The disability levels between the two countries were estimated using the current disability estimation method (percentage of people having disability based on a single question). A higher percentage of American adults (20.5%) showed disability than the Korean adults (9.6%) based on the current estimation method; however, using the Rasch model American adults had significantly less disability (Mean = -3.00 logits, SD = 1.67) than the Korean adults (Mean = -2.48 logits, SD = 2.13). Complementary to comparisons of the frequency of disability, comparison of the combined magnitude and strength of disability across countries provides new information that may better inform public health and policy decisions.
本研究利用美国的两项全国性调查以及韩国国家健康与体检调查（NHANES和KNHANES），比较了美国和韩国社区居住成年人的残疾水平。采用拉施共同项目等值法创建相同的测量框架，并比较平均残疾水平。两国的残疾水平是使用当前的残疾估计方法（基于单个问题的残疾人口百分比）进行估计的。根据当前的估计方法，美国成年人的残疾比例（20.5%）高于韩国成年人（9.6%）；然而，使用拉施模型，美国成年人的残疾程度（均值=-3.00对数单位，标准差=1.67）显著低于韩国成年人（均值=-2.48对数单位，标准差=2.13）。除了对残疾频率的比较之外，对各国残疾综合程度和强度的比较提供了新的信息，可能会为公共卫生和政策决策提供更好的依据。
