Comparison of Live and Remote Video Ratings of the Scale for Assessment and Rating of Ataxia.

Arian Taheri Amin, Jennifer Faber, Demet Önder, Okka Kimmich, Matthis Synofzik, Tetsuo Ashizawa, Thomas Klockgether, Marcus Grobe-Einsler

Movement Disorders Clinical Practice 2023 September

BACKGROUND: Video recordings of neurological examinations are often used in clinical trials. The Scale for Assessment and Rating of Ataxia (SARA) is a widely used clinical scale for ataxic patients. Despite several advantages of video ratings, correlation between live ratings and remote video-ratings has not been systematically investigated.

OBJECTIVE: To compare live and remote video assessment of SARA.

METHODS: Full SARA examinations of 69 patients with cerebellar ataxia were recorded on video. Live rating from site investigators were compared with remote video rating of three experienced ataxia clinicians using Bland-Altman analysis.

RESULTS: Live and remote video ratings showed a high level of agreement for the complete score (bias = 0.09, with standard deviation = 2.00) and all single SARA items (bias <0.20 for all items).

CONCLUSION: Remote video ratings of SARA are a reliable means to assess severity of ataxia.

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