Table 2. Post operation factors associated with delirium with using test of Kaplan Meier.

Post operation factors		Number (n=404)	Delirious	Log Rank Test	p value	Estimate Survival mean
Need for re-operation in first 24hr	yes	12	10	χ2=16.41	0.001	2.20
	no	392	105			4.02
Dysrhythmia (mean in day of 1-4)	yes	15	13	χ2=18.02	0.001	3.01
	no	389	102			4.50
Need for analgesic (in day of 2)	yes	67	14	χ2=4.32	0.030	4.37
	no	266	30			4.65
Need for inotrope (mean in day of 1-3)	yes	30	24	χ2=38.05	0.001	2.80
	no	374	91			4.50
PaCo2 >45 mmHg (in day of 1)	yes	31	20	χ2=26.62	0.001	2.48
	no	373	95			4.08
Visitor (mean in day of 1-4)	yes	203	28	χ2=33.13	0.001	4.67
	no	201	87			3.89
Using of restraints (in day of 1)	yes	6	6	χ2=24.22	0.001	1.00
	no	398	109			4.01