Joaquin A. Vizcarra , Hannah L. Casey , Ali G. Hamedani , Christopher M. Gomez
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Reliability of remote video ratings of the scale for assessment and rating of ataxia
Introduction
The Scale for Assessment and Rating of Ataxia (SARA) is a widely used clinical rating scale in ataxia. Remote video assessments of SARA examinations are increasingly used to reduce variability through centralized ratings. Remote video assessments have a high agreement with in-person ratings, but the intra- and inter-rater reliability of remote video ratings has not been examined. In this study, we compared the performance of live versus video SARA ratings and evaluated intra- and inter-rater reliability of SARA ratings via video review in patients with spinocerebellar ataxia (SCA) type 1, 2, 3, and 6.
Methods
We calculated the Bland-Altman analysis for average measures to assess the agreement between live and video ratings and the Intraclass Correlation Coefficient (ICC) for intra- and inter-rater reliability of video ratings.
Results
In all 15 participants, we found high agreement between live and video for all SARA items, with less than 0.5 point overestimation of video compared to live SARA total score, and excellent intra- and inter-rater reliability for the SARA total score rated by video revision, with an ICC of 0.98 and 0.95, respectively.
Conclusions
Our study highlights the ability to adopt SARA video ratings in clinical practice and research.
期刊介绍：
Parkinsonism & Related Disorders publishes the results of basic and clinical research contributing to the understanding, diagnosis and treatment of all neurodegenerative syndromes in which Parkinsonism, Essential Tremor or related movement disorders may be a feature. Regular features will include: Review Articles, Point of View articles, Full-length Articles, Short Communications, Case Reports and Letter to the Editor.
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