Validity and Reliability of the Korean-Translated Version of the International Cooperative Ataxia Rating Scale in Cerebellar Ataxia

• Published in: Journal of movement disorders Vol. 16; no. 1; pp. 86 - 90
• Main Authors: Park, Jinse, Cho, Jin Whan, Youn, Jinyoung, Oh, Engseok, Jang, Wooyoung, Kim, Joong-Seok, Oh, Yoon-Sang, Hwang, Hyungyoung, Ryu, Chang-Hwan, Ahn, Jin-Young, Lee, Jee-Young, Koh, Seong-Beom, Park, Jae H, Kim, Hee-Tae
• Format: Journal Article
• Language: English
• Published: Korea (South) The Korean Movement Disorder Society 01.01.2023; 대한파킨슨병및이상운동질환학회
• Subjects: Brief Communication; 신경과학; Cerebellar ataxia; Republic of Korea; Validation study
• ISSN: 2005-940X; 2093-4939
• DOI: 10.14802/jmd.22137

The International Cooperative Ataxia Rating Scale (ICARS) is a semiquantitative clinical scale for ataxia that is widely used in numerous countries. The purpose of this study was to investigate the validity and reliability of the Korean-translated version of the ICARS. Eighty-eight patients who presented with cerebellar ataxia were enrolled. We investigated the construct validity using exploratory factor analysis (EFA) and confirmatory factor analysis (CFA). We also investigated the internal consistency using Cronbach's α and intrarater and interrater reliability using intraclass correlation coefficients. The Korean-translated ICARS showed satisfactory construct validity using EFA and CFA. It also revealed good interrater and intrarater reliability and showed acceptable internal consistency. However, subscale 4 for assessing oculomotor disorder showed moderate internal consistency. This is the first report to investigate the validity and reliability of the Korean-translated ICARS. Our results showed excellent construct and convergent validity. The reliability is also acceptable.