Outcomes of robotic vs laparoscopic hepatectomy: A systematic review and meta-analysis

Table 1 Characteristics of included studies

				Laparoscopic liver resection			Robotic liver resection
Ref.	Country	Type of study	Total n. of patients	No. of patients	Age	M/F	No. of patients	Age	M/F	Score of study quality2
Berber et al[21]	United States	Retro/Comparative	32	23	66.7 ± 9.6	12/11	9	66.6 ± 6.4	7/2	4+2+3
Ji et al[30]	China	Retro/Case-control	33	20	NR	NR	13	53 (39-79)1	9/4	3+1+3
Troisi et al[45]	Belgium-Italy	Retro/Comparative	263	223	55.3 ± 15.7	98/125	40	64.6 ± 12.1	27/13	4+1+3
Lai et al[41]	China	Retro/Comparative	66	33	NR	NR	33	NR	NR	4+1+3
Wu et al[47]	Taiwan	Retro/Comparative	79	41	54.1 ± 14	28/13	38	60.9 ± 14.9	32/6	4+1+3
Tsung et al[46]	United States	Retro/Case-control	171	114	58.7 ± 15.8	47/67	57	58.3 ± 14.6	24/33	3+2+3
Spampinato et al[43]	Italy	Retro/Comparative	50	25	62 (33-80)1	10/15	25	63 (32-80)	13/12	4+2+3

¹Data expressed as median (range);

²According to the NOS (Newcastle-Ottawa Scale) classification. Retro: Retrospective; NR: Not reported.