Table 2.

Surgical characteristics and surgical outcomes compared with four groups

Variables	Total	Group I	Group II	Group III	Group IV	Univariate
	(N = 300)	(N = 22)	(N = 124)	(N = 132)	(N = 22)	p
Type of resection						0.000*
Hemihepatectomy	53 (17.8%)	0	1 (0.8%)	36 (27.3%)	16 (77.3%)
Segmentectomy	200 (67.1%)	1 (4.5%)	97 (79.0%)	96 (72.7%)	6 (22.7%)
Wedge resection	45 (15.1%)	20 (95.5%)	25 (20.2%)	0	0
Total operation time (min)	160 (40–800)	120 (60–325)	128 (40–380)	179 (50–800)	212 (95–500)	0.000*
Blood transfusion	65 (21.7%)	2 (9.5%)	24 (19.5%)	32 (24.2%)	7 (31.8%)	0.256
Conversion, n (%)	33 (11.0%)	2 (9.5%)	10 (8.1%)	19 (14.4%)	2 (9.1%)	0.444
Pringle's maneuver, n (%)	68 (25.0%)	0	18 (14.5%)	45 (34.1%)	5 (22.7%)	0.000*
General complications	73 (24.3%)	3 (13.6%)	28 (22.6%)	33 (25.0%)	9 (40.9%)	0.240
Intraoperative blood loss (ml)	200 (5–5000)	200 (50–800)	200 (5–3000)	300 (20–5000)	350 (100–4500)	0.033*
With complications of Clavien–	18 (6.0%)	0	4 (3.2%)	11 (8.3%)	3 (13.6%)	0.084
Dindo grade IIIA or above
Clavien–Dindo grade
III	14 (4.7%)	0	3 (2.4%)	8 (6.1%)	3 (13.6%)
IV	4 (1.3%)	0	1 (0.8%)	3 (2.2%)	0
V	0	0	0	0	0
Hospital mortality	6	0	2	4	0
Hospital stay, day						0.005*
> 9	132 (44.0%)	13 (54.2%)	44 (36.7%)	57 (43.2%)	16 (72.7%)
≤ 9	168 (56.0%)	8 (33.3%)	79 (65.8%)	65 (49.2%)	6 (27.3%)

*p < 0.05 is statistically significant