Table 2.

Raw data of each included study

First author	Blood loss (mL)	Operative time (min)	Conversion	Morbidity	R1 rate	Hospital stay (d)
Berber et al[21]
Laparoscopic liver resection	155 ± 54	233.6 ± 16.4	0%	17%	NR	NR
Robotic liver resection	136 ± 61	258.5 ± 27.9	11.10%	11%	NR	NR
Ji et al[30]
Laparoscopic liver resection	NA	130 ± 42.5	10%	10%	NR	NA
Robotic liver resection	NA	338 ± 166.9	0%	7.80%	NR	NA
Troisi et al[45]
Laparoscopic liver resection	174 ± 133	262 ± 111	7.60%	12.60%	5.40%	5.9 ± 3.8
Robotic liver resection	330 ± 303	271 ± 100	20%	12.50%	7.50%	6.1 ± 2.6
Lai et al[41]
Laparoscopic liver resection	347.7 ± 498.7	133.4 ± 42.7	NR	9%	9.10%	NR
Robotic liver resection	373.4 ± 872	202.7 ± 69.8	NR	3%	9.10%	NR
Wu et al[47]
Laparoscopic liver resection	173 ± 165	227 ± 80	12.20%	10%	NR	7.2 ± 4.4
Robotic liver resection	325 ± 480	380 ± 166	5%	8%	NR	7.9 ± 4.7
Tsung et al[46]
Laparoscopic liver resection	100 ± 50	198.5 ± 20.6	8.80%	26%	8%	4 ± 0.3
Robotic liver resection	200 ± 71.8	253 ± 43.7	7%	19.30%	5%	4 ± 0.6
Spampinato et al[43]
Laparoscopic liver resection	512.5 ± 287.5	375 ± 105	4%	36%	9%	10.2 ± 4.2
Robotic liver resection	625 ± 450	456.2 ± 121	4%	16%	0%	10.5 ± 4.5

NR: Not reported; NA: Not assessable.