Table 2.

Univariate and multivariate analysis of factors associated with mortality.

	Univariate analysis (p < 0.1)			Multivariate analysis
Variables	RR	95 %CI	p-value	RR	95 %CI	p-value
HSR Center	5.0	1.8−14	0.002	4.8	0.46−49	0.190
Respiratory comorbidity	7.3	1.9−28	0.004	2.9	0.37−23	0.313
Cancer comorbidity	12.2	2.3−65	0.004	56	3.5−903	0.004
EEG at 3rd week	4.2	1.4−13	0.013	11	1.3−93	0.027
Generalized intermittent slow waves	0.3	0.09−0.9	0.038	0.12	0.01−1.5	0.102
EEG monitoring	4.8	0.9−23	0.053	3.1	0.13−74	0.488
Generalized low voltage	3.7	0.96−14	0.058	3.8	0.53−27	0.185
Sedation during EEG	2.4	0.92−6.2	0.074	2.3	0.37−14	0.376
Concordant lateralization of abnormalities between EEG and MRI	2.4	0.88−6.7	0.087	5.3	0.58−49	0.138