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J Head Trauma Rehabil · Sep 2010
Multicenter StudyReliability and diagnostic characteristics of the JFK coma recovery scale-revised: exploring the influence of rater's level of experience.
- Marianne Løvstad, Kathrine F Frøslie, Joseph T Giacino, Toril Skandsen, Audny Anke, and Anne-Kristine Schanke.
- Department of Research, Sunnaas Rehabilitation Hospital, Nesoddtangen, Norway. Marianne.lovstad@sunnaas.no
- J Head Trauma Rehabil. 2010 Sep 1;25(5):349-56.
ObjectiveTo confirm the reliability and diagnostic validity of the JFK Coma Recovery Scale-Revised (CRS-R) across raters with varying levels of experience.MethodsThirty-one patients with disorders of consciousness were recruited from 6 Norwegian hospitals.Main Outcome MeasuresCRS-R and the Disability Rating Scale.ResultsReliability measures were good for the CRS-R total scores and moderate to good for its subscales. Diagnostic agreement among examiners was good. Raters' experience with the CRS-R favorably influenced reliability. Sensitivity and specificity analyses demonstrated better detection of patients in minimally conscious state on the CRS-R relative to the Disability Rating Scale.ConclusionsThe CRS-R is a reliable tool for diagnosing vegetative state and minimally conscious state. Raters' level of experience influences the reliability of the CRS-R scores.
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