Table 2.

Outcome parameter for the anesthetic agent given throughout anesthesia maintenance.

	All Patients (n = 1,058)	Propofol (n = 294)	Sevoflurane (n = 371)	Desflurane (n = 393)	Value of p
Burst suppression duration (min)*	22.6 ± 17.4	32.5 ± 20.3	17.1 ± 12.6	20.2 ± 16.0	0.000
Burst suppression ratio*	0.19 ± 0.1	0.25 ± 0.08	0.16 ± 0.09	0.18 ± 0.12	0.000
Depth of anesthesia
Average BIS (0–100)	40.6 ± 7.3	40.3 ± 7.2	40.8 ± 7.4	40.8 ± 7.2	0.649
Minimum BIS (0–100)	32.1 ± 13.6	36.3 ± 6.8	36.6 ± 6.9	36.7 ± 6.9	0.633
POD yes/no (%)*	18.7/81.3	12.9/87.1	16.2/83.8	25.4/74.6	0.000
Days on the ward*	13.8 ± 11.8	13 ± 13.3	13.0 ± 10.0	15.2 ± 12.0	0.003
Days on ICU	1.5 ± 7.3	1.3 ± 7.1	1.1 ± 6.0	2.0 ± 8.6	0.527
In-hospital mortality (%)	2.2	0.3	2.2	3.6	0.001

POD and In-hospital mortality were compared by Chi-Square test. Continuious data were compared by Kruska Wallis test. *indicates p < 0.05.