Table 2.

Perioperative data.

	Normal weight patients (n = 362)	Obese patients (n = 38)	p value
Operative time, min	110 ± 44	127 ± 37	<0.05
Median bleeding volume, ml (range)	0 (0–1400)	0 (0–150)	0.8
Supplementary exposure system	315 (87)	37 (97)	0.1
Conversion (%)	12 (3)	2 (5)	0.5
Multiple port surgery	8 (2)	2 (5)	0.3
Open Surgery	4 (1)	0	0.5
Complications (%)	23 (6)	3 (8)	0.7
Wound infection	7 (2)	1 (3)	0.8
Prolonged inflammation response	4 (1)	1 (3)	0.4
Incisional hernia of the umbilicus	2 (0.6)	1 (3)	0.2
Intraabdominal abscess	3 (0.8)	0	0.6
Common bile duct stone	2 (0.6)	0	0.6
Injury of the intestine	2 (0.6)	0	0.6
Pneumonia	1 (0.3)	0	0.7
Ileus	1 (0.3)	0	0.7
Intraoperative bleeding	1 (0.3)	0	0.7
Postoperative hospital stay, day	4.5 ± 3.4	4.4 ± 1.6	0.7

Datas are given mean ± SD or number (%), otherwise specified.

SD; standard deviation.