Evaluating the Validity and Reliability of the Korean Version of the Scales for Outcomes in Parkinson's Disease-Cognition

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Authors: Jinse Park ; Eungseok Oh ; Seong-Beom Koh ; In-Uk Song ; Tae-Beom Ahn ; Sang Jin Kim ; Sang-Myung Cheon ; Yoon-Joong Kim ; Jin Whan Cho ; Hyeo-Il Ma ; Mee Young Park ; Jong Sam Baik ; Phil Hyu Lee ; Sun Ju Chung ; Jong-Min Kim ; Han-Joon Kim ; Young-Hee Sung ; Do Young Kwon ; Jae-Hyeok Lee ; Jee-Young Lee ; Ji Seon Kim ; Ji Young Yun ; Hee Jin Kim ; Jin Yong Hong ; Mi-Jung Kim ; Jinyoung Youn ; Hui-Jun Yang ; Won Tae Yoon ; Sooyeoun You ; Kyum-Yil Kwon ; Su-Yun Lee ; Younsoo Kim ; Hee-Tae Kim ; Joong-Seok Kim ; Ji-Young Kim

Keywords: Dementia ; Neurocognitive test ; Parkinson’s disease ; Validation study

Abstract: Objective: The Scales for Outcomes in Parkinson's Disease-Cognition (SCOPA-Cog) was developed to assess cognition in patients with Parkinson's disease (PD). In this study, we aimed to evaluate the validity and reliability of the Korean version of the SCOPACog (K-SCOPA-Cog).

Methods: We enrolled 129 PD patients with movement disorders from 31 clinics in South Korea. The original version of the SCOPA-Cog was translated into Korean using the translation-retranslation method. The test-retest method with an intraclass correlation coefficient (ICC) and Cronbach's alpha coefficient were used to assess reliability. Spearman's rank correlation analysis with the Montreal Cognitive Assessment-Korean version (MOCA-K) and the Korean Mini-Mental State Examination (K-MMSE) were used to assess concurrent validity.

Results: The Cronbach's alpha coefficient was 0.797, and the ICC was 0.887. Spearman's rank correlation analysis revealed a significant correlation with the K-MMSE and MOCA-K scores (r = 0.546 and r = 0.683, respectively).

Conclusion: Our.

Results: demonstrate that the K-SCOPA-Cog has good reliability and validity.