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Multicenter Study
. 2010 Sep-Oct;25(5):349-56.
doi: 10.1097/HTR.0b013e3181cec841.

Reliability and diagnostic characteristics of the JFK coma recovery scale-revised: exploring the influence of rater's level of experience

Marianne Løvstad  1 , Kathrine F Frøslie, Joseph T Giacino, Toril Skandsen, Audny Anke, Anne-Kristine Schanke
Affiliations
Multicenter Study

Reliability and diagnostic characteristics of the JFK coma recovery scale-revised: exploring the influence of rater's level of experience

Marianne Løvstad et al. J Head Trauma Rehabil. 2010 Sep-Oct.

Abstract

Objective: To confirm the reliability and diagnostic validity of the JFK Coma Recovery Scale-Revised (CRS-R) across raters with varying levels of experience.

Methods: Thirty-one patients with disorders of consciousness were recruited from 6 Norwegian hospitals.

Main outcome measures: CRS-R and the Disability Rating Scale.

Results: Reliability 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.

Conclusions: The 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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