Table 2. Perioperative complication according to serum albumin groups.

Variable	Low albumin (n=51)	Normal albumin (n=406)	P value
Vascular complication (major & minor)	4 [8]	23 [6]	1*
Bleeding	6 [12]	23 [6]	0.118*
Transfusion
Packed red blood cells	32 [63]	133 [33]	<0.001
Fresh frozen plasma	9 [18]	18 [4]	<0.001
Stroke	1 [2]	8 [2]	1*
Acute kidney injury	21 [41]	78 [19]	0.001
Pacemaker implantation	6 [12]	42 [10]	0.769
Rethoracotomy	2 [4]	8 [2]	0.312*
Myocardial infarction	1 [2]	1 [0.2]	0.208*
Infection	27 [53]	98 [24]	<0.001
Post interventional ventilation	26 [51]	100 [25]	<0.001
Tracheotomy	3 [6]	8 [2]	0.115*

Data presented as number [percentage] for categorical variables, mean standard deviation for normally distributed or median and (25^th and 75^th percentile) for not normally distributed continuous variables. Accordingly, Chi-square, exact Fisher*, Student’s t-test or Mann-Whitney U test were used to compare.