Inter-rater reliability of the International Cooperative Ataxia Rating Scale (ICARS)

Storey, Elsdon, Tuck, Kate, Hester, Robert, Hughes, Andrew and Churchyard, Andrew (2004) Inter-rater reliability of the International Cooperative Ataxia Rating Scale (ICARS). Movement Disorders, 19 2: 190-192. doi:10.1002/mds.10657

Author Storey, Elsdon
Tuck, Kate
Hester, Robert
Hughes, Andrew
Churchyard, Andrew
Title Inter-rater reliability of the International Cooperative Ataxia Rating Scale (ICARS)
Journal name Movement Disorders   Check publisher's open access policy
ISSN 0885-3185
Publication date 2004-02
Sub-type Article (original research)
DOI 10.1002/mds.10657
Volume 19
Issue 2
Start page 190
End page 192
Total pages 3
Place of publication New York
Publisher Wiley-liss
Language eng
Abstract We assessed the inter-rater reliability of the 100-point International Cooperative Ataxia Rating Scale (ICARS). Three neurologists independently rated video-taped ICARS examinations of 22 subjects with genetically determined ataxias (spinocerebellar ataxia [SCA] Type 1 in 11; SCA Type 2 in 1; Friedreich's ataxia in 10) and 4 controls. Scores on live ICARS assessment had ranged from 0 to 7 for controls and 11 to 74 for ataxic subjects (clinically very mildly affected to wheelchair-bound). Inter-rater correlation was very high for the total score (Kendall's omega 0.994, 95% confidence interval, 0.988-0.997), and high to very high for each component subscore (0.791 for speech to 0.994 for posture/gait). All correlations were significant at P < 0.00001. The ICARS exhibits very high inter-rater reliability even without prior observer standardisation and is sensitive to a range of ataxia severities from very mild to severe. (C) 2003 Movement Disorder Society
Keyword Clinical Neurology
International Cooperative Ataxia Rating Scale
spinocerebellar ataxias
Friedreich's ataxia
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Queensland Brain Institute Publications
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Created: Wed, 17 Oct 2007, 12:39:28 EST