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Chen L, Ye S, Murphy D, Wu J, Zhang H, Liu H, Zou B, Hou G, Zhang N, Yin T, Smith RA, Fan D. Chinese Translation and Validation of the Center for Neurologic Study Lability Scale. Neurol Ther 2024:10.1007/s40120-024-00605-w. [PMID: 38625649 DOI: 10.1007/s40120-024-00605-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 03/15/2024] [Indexed: 04/17/2024] Open
Abstract
INTRODUCTION Pseudobulbar palsy is a common symptom in patients with amyotrophic lateral sclerosis (ALS), but it is often underdiagnosed or misdiagnosed as other diseases. The Center for Neurologic Study Lability Scale (CNS-LS) is a self-report scale consisting of seven questions designed for evaluating pseudobulbar affect (PBA). The current study aimed to validate a Chinese version of the CNS-LS. METHODS The Chinese version of the CNS-LS was obtained through a standardized forward-backward translation and cultural adaptation. A total of 105 patients with ALS were recruited from the ALS database of Peking University Third Hospital in Beijing, China, to complete the CNS-LS. The reliability of the Chinese version was determined by the test-retest method, and receiver operating characteristic (ROC) analysis was performed for criterion validity. RESULTS Of 105 patients with ALS, 37 had symptoms of PBA and were diagnosed with that condition by neurologists. Forty-two patients completed the CNS-LS twice, and there was no statistically significant difference between the scores (Z = -0.896, p = 0.37). The Spearman correlation coefficient between the test and retest scores was 0.940 (p < 0.0005), and the Cronbach alpha coefficient was high (α = 0.905, n = 105). Scores of 12 or higher on the CNS-LS identified PBA with sensitivity of 0.919 and specificity of 0.882. The area under the ROC curve was 0.924. CONCLUSION The Chinese version of the CNS-LS demonstrated good sensitivity and specificity in the group of patients with ALS enrolled in this study. The CNS-LS should be a useful instrument for clinical and research purposes for patients in this language group.
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Affiliation(s)
- Lu Chen
- Department of Neurology, Peking University Third Hospital, Haidian District, 49 North Garden Road, Beijing, 100191, China
- Department of Neurology, Yan'an Hospital of Traditional Chinese Medicine, No. 26 Xuan Yuan Road, Bridge Ditch Street, Bao Ta District, Yan'an, 716000, Shaanxi Province, China
| | - Shan Ye
- Department of Neurology, Peking University Third Hospital, Haidian District, 49 North Garden Road, Beijing, 100191, China
| | - Davan Murphy
- Center for Neurological Study in La Jolla, 7590 Fay Avenue, Suite 517, La Jolla, CA, USA
| | - Jieying Wu
- Department of Neurology, Peking University Third Hospital, Haidian District, 49 North Garden Road, Beijing, 100191, China
| | - Hui Zhang
- Department of Neurology, Peking University Third Hospital, Haidian District, 49 North Garden Road, Beijing, 100191, China
| | - Hong Liu
- Department of Neurology, Peking University Third Hospital, Haidian District, 49 North Garden Road, Beijing, 100191, China
| | - Boliang Zou
- Department of Neurology, Peking University Third Hospital, Haidian District, 49 North Garden Road, Beijing, 100191, China
| | - Guanghao Hou
- Department of Neurology, Peking University Third Hospital, Haidian District, 49 North Garden Road, Beijing, 100191, China
| | - Nan Zhang
- Department of Neurology, Peking University Third Hospital, Haidian District, 49 North Garden Road, Beijing, 100191, China
| | - Tielun Yin
- Department of Neurology, Peking University Third Hospital, Haidian District, 49 North Garden Road, Beijing, 100191, China
| | - Richard A Smith
- Center for Neurological Study in La Jolla, 7590 Fay Avenue, Suite 517, La Jolla, CA, USA.
| | - Dongsheng Fan
- Department of Neurology, Peking University Third Hospital, Haidian District, 49 North Garden Road, Beijing, 100191, China.
- Key Laboratory for Neuroscience, National Health Commission/Ministry of Education, Peking University, 38 Xueyuan Road, Haidian District, Beijing, 100191, China.
- Beijing Key Laboratory of Biomarker and Translational Research in Neurodegenerative Diseases, Beijing, 100191, China.
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