Anterior vs conventional approach hepatectomy for large liver cancer: A meta-analysis

Table 2 Quality assessment of the included non-randomized controlled trials based on the Newcastle-Ottawa scale

Ref.	Selection stars	Comparability stars	Outcome stars	Total stars	Study quality
Lai et al[1]	2	2	2	6	High
Liu et al[3]	2	2	3	7	High
Takács et al[14]	1	2	2	5	High
Wang et al[15]	2	2	3	7	High
Wu et al[13]	2	2	3	7	High
Li et al[12]	3	2	2	7	High