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J Head Trauma Rehabil. 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.

Author information

1
Department of Research, Sunnaas Rehabilitation Hospital, Nesoddtangen, Norway. Marianne.lovstad@sunnaas.no

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.

PMID:
20142758
DOI:
10.1097/HTR.0b013e3181cec841
[Indexed for MEDLINE]

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