Title |
Inter‐rater reliability of the International Cooperative Ataxia Rating Scale (ICARS)
|
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Published in |
Movement Disorders, November 2003
|
DOI | 10.1002/mds.10657 |
Pubmed ID | |
Authors |
Elsdon Storey, Kate Tuck, Robert Hester, Andrew Hughes, Andrew Churchyard |
Abstract |
We assessed the inter-rater reliability of the 100-point International Cooperative Ataxia Rating Scale (ICARS). Three neurologists independently rated videotaped 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. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 2 | 1% |
Germany | 1 | <1% |
Netherlands | 1 | <1% |
Brazil | 1 | <1% |
Korea, Republic of | 1 | <1% |
Spain | 1 | <1% |
Sweden | 1 | <1% |
Unknown | 137 | 94% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 26 | 18% |
Researcher | 23 | 16% |
Student > Master | 19 | 13% |
Student > Postgraduate | 12 | 8% |
Student > Bachelor | 10 | 7% |
Other | 37 | 26% |
Unknown | 18 | 12% |
Readers by discipline | Count | As % |
---|---|---|
Medicine and Dentistry | 64 | 44% |
Neuroscience | 15 | 10% |
Nursing and Health Professions | 10 | 7% |
Psychology | 8 | 6% |
Engineering | 6 | 4% |
Other | 16 | 11% |
Unknown | 26 | 18% |