Cho Eunyoung, Choi Sungwon, Demeyere Nele, Kim Rina, Lim Ikhyun, Kim MinYoung
Department of Rehabilitation Medicine, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
Department of Psychology, Duksung Women's University, Seoul, Korea.
Ann Rehabil Med. 2025 Feb;49(1):5-14. doi: 10.5535/arm.240099. Epub 2025 Feb 13.
To establish and evaluate the validity of the recently developed Korean version of the Oxford Cognitive Screen (K-OCS), this study verified its reliability, validity, and diagnostic accuracy.
Between November 2021 and December 2023, we recruited 72 patients with stroke from our hospital who agreed to participate in the study. The patients were repeatedly tested using K-OCS by the same or different assessors to estimate inter- and intra-rater reliability. To demonstrate the validity and usability of K-OCS, the test results of screening tools currently used in clinical practice, including the Korean-Mini Mental State Examination and the Korean version of the Montreal Cognitive Assessment, were used in comparison analyses.
The subtests of K-OCS demonstrated excellent inter-rater reliability (intra-class correlation coefficient [ICC]=0.914-0.998) and test-retest reliability (ICC=0.913-0.994). We found moderate-to-strong correlations for convergent validity for the subsets (r=0.378- 0.979, p<0.01), and low-to-moderate discriminant validity correlations. The optimal cut-offs estimated for the subtests of the K-OCS showed a good-to-high range of specificity (94.8%- 100%). The positive predictive value was 58.2%-100% and negative predictive value was 65.6%-98.4%. Sensitivity was estimated at 25.6%-86.9%.
The results of this study indicate that K-OCS is a reliable and valid tool for screening cognitive impairment in patients post-stroke.
为建立并评估最新开发的韩语版牛津认知筛查量表（K-OCS）的有效性，本研究验证了其信度、效度及诊断准确性。
在2021年11月至2023年12月期间，我们从我院招募了72名同意参与研究的中风患者。由相同或不同评估者使用K-OCS对患者进行重复测试，以评估评分者间信度和评分者内信度。为证明K-OCS的有效性和实用性，在比较分析中使用了目前临床实践中使用的筛查工具的测试结果，包括韩国简易精神状态检查表和韩语版蒙特利尔认知评估量表。
K-OCS的各子测试显示出优异的评分者间信度（组内相关系数[ICC]=0.914 - 0.998）和重测信度（ICC=0.913 - 0.994）。我们发现各子集的聚合效度存在中度至强相关性（r=0.378 - 0.979，p<0.01），以及低度至中度的区分效度相关性。K-OCS各子测试估计的最佳截断值显示出良好至高范围的特异性（94.8% - 100%）。阳性预测值为58.2% - 100%，阴性预测值为65.6% - 98.4%。敏感性估计为25.6% - 86.9%。
本研究结果表明，K-OCS是一种可靠且有效的中风后患者认知障碍筛查工具。
