Diagnostic accuracy of the CRS-R index in patients with disorders of consciousness.

A new interesting article has been published in Brain Inj. 2019 Jul 18:1-4. doi: 10.1080/02699052.2019.1644376. and titled:

Diagnostic accuracy of the CRS-R index in patients with disorders of consciousness.

Authors of this article are:

Annen J, Filippini MM, Bonin E, Cassol H, Aubinet C, Carrière M, Gosseries O, Thibaut A, Barra A, Wolff A, Sanz LRD, Martial C, Laureys S, Chatelle C.

A summary of the article is shown below:

Objective: To obtain a CRS-R index suitable for diagnosis of patients with disorders of consciousness (DOC) and compare it to other CRS-R based scores to evaluate its potential for clinics and research. Design: We evaluated the diagnostic accuracy of several CRS-R-based scores in 124 patients with DOC. ROC analysis of the CRS-R total score, the Rasch-based CRS-R score, CRS-R-MS and the CRS-R index evaluated the diagnostic accuracy for patients with the Unresponsive Wakefulness Syndrome (UWS) and Minimally Conscious State (MCS). Correlations were computed between the CRS-R-MS, CRS-R index, the Rasch-based score and the CRS-R total score. Results: Both the CRS-R-MS and CRS-R index ranged from 0 to 100, with a cut-off of 8.315 that perfectly distinguishes between patients with UWS and MCS. The CRS-R total score and Rasch-based score did not provide a cut-off score for patients with UWS and MCS. The proposed CRS-R index correlated with the CRS-R total score, Rasch-based score and the CRS-R-MS. Conclusion: The CRS-R index is reliable to diagnose patients with UWS and MCS and can be used in compliance with the CRS-R scoring guidelines. The obtained index offers the opportunity to improve the interpretation of clinical assessment and can be used in (longitudinal) research protocols. Abbreviations: CRS-R: Coma Recovery Scale-Revised; CRS-R-MS: Coma Recovery Scale-Revised Modified Score; DOC: Disorders of Consciousness; MCS: Minimally Conscious State; UWS: Unresponsive Wakefulness Syndrome; ROC: Receiver Operating Characteristic; AUC: Area Under the Curve; IRT: Item Response Theory.

Check out the article’s website on Pubmed for more information:

This article is a good source of information and a good way to become familiar with topics such as: CRS-R;CRS-R index;CSR-R modified score;disorders of consciousness;minimally conscious state;unresponsive wakefulness syndrome.

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