Table 1.

Baseline characteristics of patients in delirium and no delirium groups.

Variable	Delirium (n = 669)	No delirium (n = 6,608)	P value
Age (years)	62.64 ± 12.13	60.37 ± 11.72	<0.001
Sex (n, %)			<0.001
Male	488 (72.9 %)	3,835 (58.0 %)
Female	181 (27.1 %)	2,773 (42.0 %)
Comorbidities (n, %)
Hypertension	450 (67.3 %)	3,212 (48.6 %)	<0.001
Diabetes	133 (19.9 %)	1,314 (19.9 %)	1
Myocardial infarction	47 (7.0 %)	376 (5.7 %)	0.187
Hyperlipidemia	95 (14.2 %)	1,447 (21.9 %)	<0.001
Cerebral vascular disease	91 (13.6 %)	638 (9.7 %)	0.002
Atrial fibrillation	105 (15.7 %)	1,556 (23.6 %)	<0.001
COPD	35 (5.2 %)	283 (4.3 %)	0.296
Heart failure	143 (21.4 %)	2,017 (30.5 %)	<0.001
Kidney disease	89 (13.3 %)	306 (4.6 %)	<0.001
Liver disease	50 (7.5 %)	240 (3.6 %)	<0.001
Operation time (h)	5.54 ± 2.06	4.12 ± 1.32	<0.001
Intraoperative MAP fluctuation	168.20 ± 92.28	176.31 ± 95.09	0.031
Intraoperative blood loss (ml)	1,200 [900, 1,550]	1,000 [800, 1,200]	<0.001
Intraoperative blood transfusion (ml)	410 [150, 900]	150 [0, 300]	<0.001
Type of surgery (n, %)
Heart valve surgery	200 (29.9 %)	3,685 (52.7 %)	<0.001
Isolated CABG	155 (23.2 %)	1,821 (27.6 %)	0.017
CABG + Heart valve surgery	73 (10.9 %)	530 (8.0 %)	0.012
AD repair surgery (Open heart)	200 (29.9 %)	214 (3.2 %)	<0.001
Other procedures	41(6.1 %)	560 (8.5 %)	0.043

COPD, chronic obstructive pulmonary disease; CABG, coronary artery bypass; MAP, mean artery pressure; AD, aortic dissection.