Impact of body mass index on outcomes of 48281 patients undergoing first time cadaveric liver transplantation

Table 7 Summary of the primary causes mortality during the index admission for liver transplantation stratified by recipients body mass index n (%)

		WHO recipients' MBI class						Group comparisons	P value
					Obese recipients
Primary cause of perioperative mortality	All recipients (n = 48281)	Underweight (n = 914)	Normal weight (n = 14529)	Overweight (n = 16724)	Class I (n = 9944)	Class II (n = 4438)	Class III (n = 1732)
		(I)	(II)	(III)	(IV)	(V)	(VI)
Infections or multiorgan failure	718 (1.4)	22 (2.4)	202 (1.3)	229 (1.3)	155 (1.5)	67 (1.5)	43 (2.4)		≥ 0.05
Cerebrovascular complication	155 (0.3)	4 (0.4)	47 (0.3)	60 (0.3)	25 (0.2)	14 (0.3)	5 (0.2)		≥ 0.05
Hemmorrhagic	128 (0.2)	3 (0.3)	38 (0.2)	41 (0.2)	32 (0.3)	11 (0.2)	3 (0.1)		≥ 0.05
Single organ failure	102 (0.2)	1 (0.1)	25 (0.1)	35 (0.2)	21 (0.2)	13 (0.2)	7 (0.4)		≥ 0.05
Intraoperative complications	75 (0.1)	2 (0.2)	30 (0.2)	21 (0.1)	12 (0.1)	4 (0.09)	6 (0.3)		≥ 0.05
Cardiovascular or embolic event	53 (0.1)	1 (0.1)	8 (0.05)	16 (0.09)	13 (0.13)	12 (0.2)	3 (0.17)	(II) vs (V)	≤ 0.05
Vascular thrombosis	22 (0.04)	0	5 (0.03)	9 (0.05)	2 (0.02)	4 (0.09)	2 (0.1)		≥ 0.05
Biliary complication	2 (0.004)	0	0	1 (0.005)	1 (0.01)	0	0		≥ 0.05
Primary graft non-function	62 (0.12)	1 (0.1)	11 (0.07)	27 (0.16)	12 (0.12)	5 (0.1)	6 (0.3)		≥ 0.05
Rejection	9 (0.01)	0	3 (0.02)	3 (0.01)	2 (0.02)	1 (0.02)	0		≥ 0.05
Other causes	751 (1.5)	12 (1.3)	203 (1.3)	235 (1.4)	177 (1.7)	91 (2.0)	33 (1.9)		≥ 0.05
Unknown	172 (0.3)	1 (0.1)	57 (0.3)	61 (0.3)	32 (0.3)	13 (0.2)	8 (0.4)		≥ 0.05
Total	2249 (4.6)	47 (5.1)	629 (4.3)	738 (4.4)	484 (4.8)	235 (5.2)	116 (6.6)

WHO: World Health Organization; BMI: Body mass index.