. Author manuscript; available in PMC: 2015 Mar 10.

Published in final edited form as: Ann Neurol. 2014 Oct 24;76(6):869–879. doi: 10.1002/ana.24283

Table 2.

Confusion matrices showing the accuracy of wakeful EEG organization (top two sub-tables) and fMRI command following (CF) (bottom sub-table) in correctly identifying patients considered to be conscious (MCS/EMCS) or unconscious (VS) based on standard clinical behavioral evaluations. Fisher’s exact test (one-tailed) revealed significant correlation between EEG background organization and bedside diagnosis regardless where the threshold for degree of EEG background abnormalities are drawn. No correlation was found between evidence for command following on fMRI and behavioral diagnosis.

		Behavioral diagnosis
		MCS/EMCS	VS	total
Awake EEG background	normal/mild	24	2	26
Awake EEG background	mod & severe	12	6	18
total		36	8	44
*Fisher’s exact test (one tailed) p=0.039
		Behavioral diagnosis
		MCS/EMCS	VS	total
Awake EEG background	norm/mild & mod	35	5	40
Awake EEG background	severe	1	3	4
total		36	8	44
*Fisher’s exact test (one tailed) p=0.015
		Behavioral diagnosis
		MCS/EMCS	VS	total
fMRI CF	positive	4	0	4
fMRI CF	negative	16	6	22
total		20	6	26
*Fisher’s exact test (one tailed) p=0.32 (n.s.)