Tab. II.

Univariate analysis of variables in control group

Variable	n	Delirium n (%)	No delirium n (%)	Sig. P value	Exp(B) OR	95% CI For Exp (B)OR
						Lower	Upper
Age (years)	250	52 (20.8)	198 (79.2)	< 0.0001	1.090	1.048	1.133
Gender	250	52	198	0.616	0.842	0.431	1.646
EuroSCORE II	250	52 (20.8)	198 (79.2)	< 0.0001	1.348	1.187	1.153
D. mellitus	77	21 (27.3)	56 (72.7)	0.991	1.706	0.904	3.217
Hypertension	229	49 (21.4)	180 (78.6)	0.441	1.642	0.465	5.805
Hypercholest.	187	36 (19.3)	151 (80.7)	0.309	0.705	0.359	1.383
Smoking	88	13 (14.4)	75 (85.6)	0.082	0.542	0.272	1.082
Alcoholism	26	5 (19.2)	21 (80.8)	0.827	0.892	0.319	2.490
Psych. disease	22	2 (9.1)	20 (90.9)	0.171	0.354	0.080	1.566
ACC time (min)	250			0.003	1.010	1.003	1.017
> 60	149	36 (24.2)	113 (75.8)	< 0.001
CPB time (min)
> 120	18	10 (55.6)	8 (44.4)	< 0.0001	15.188	3.749	61.626
Sufentanil d. (mg)	250	52 (20.8)	198 (79.2)	< 0.0101	12.419	16.649	92.644
Benzo. d. (mg)	250	52 (20.8)	198 (79.2)	0.055	1.120	0.998	1.257
ICU stay (days)	250	52 (20.8	198 (79.2)	< 0.0001	1.256	1.137	1.387
Hosp. stay (days)	250	52 (20.8)	198 (79.2)	< 0.0001	1.112	1.056	1.172
Operation type	250	52 (20.8)	198 (79.2)
OPCAB	32	6 (18.7)	26 (81.3)	0.823	0.897	0.348	2.317
CABG	104	20 (19.2)	84 (80.8)	0.010	2.427	1.238	4.760
Valve comb., OS	114	26 (29.6)	88 (70.4)	0.460	1.269	0.674	2.390

sig. – significant, Exp(B) – coefficient, OR – odds ratio, CI – confidence interval, D. – diabetes, Hypercholest. – hypercholesterolemia, Psych. – psychiatric, ACC – aortic cross-clamping, CPB – cardio-pulmonary bypass, d. – dose, Benzo. – benzodiazepine, ICU – intensive care unit, Hosp. – hospitalization, OPCAB – off-pump coronary artery bypass, CABG – coronary artery bypass graft surgery, comb. – combined, OS – other surgery