Outcomes of liver resection in hepatitis C virus-related intrahepatic cholangiocarcinoma: A systematic review and meta-analysis

Table 1 Baseline characteristics and patient demographics of the included studies (n = 7)

No.	Ref.	Study design	Study period	Country	Sample size, n (%)	Age, yr	Males, n (%)	Tumor size, cm	Cirrhosis, n	Tumor stage	Tumor grade
1	Hai et al[11], 2005	Retrospective	Jan 1997-Dec 2002	Japan	HCV+: 17; HCV-: 21	HCV+: 69.0 ± 4.9; HCV-: 60.6 ± 12.4	HCV+: 10; HCV-: 13	HCV+: 3.6 ± 2.3; HCV-: 6.4 ± 4.5	NR	HCV+:I: 4, II: 4, III: 3, IV: 6; HCV-: I: 0, II: 6, III: 7, IV: 8	NR
2	Kaibori et al[19], 20211	Retrospective	Jan 2000-Dec 2007	Japan	HCV+: 102; HCV-: 102	HCV+: ≥ 70: 56/102; HCV-: ≥ 70: 59/102	HCV+: 64; HCV-: 74	HCV+: ≥ 3.5cm: 69/102; HCV-: ≥ 3.5cm: 61/102	HCV+: 24; HCV-: 8	NR	HCV+:well: 14, moderate: 49, poor: 27; HCV-: well: 21, moderate: 53, poor: 11
3	Uenishi et al[20], 2014	Retrospective	Jan 2000-Dec 2011	Japan	HCV+: 33 HCV-: 57	HCV+: 66.9 ± 9.0; HCV-: 64.3 ± 11.2	HCV+: 23; HCV-: 38	HCV+: 4.7 ± 1.7; HCV-: 4.8 ± 2.6	HCV+: 14; HCV-: 3	HCV+:I: 12, II: 7, III: 5, IV: 9; HCV-: I: 18, II: 9, III: 5, IV: 25	HCV+: poor: 7; HCV-: poor: 7
4	Cai et al[18], 2021	Retrospective	Dec 2008-Dec 2017	China	HCV+: 3; HCV-: 527	NR	NR	NR	NR	NR	NR
5	Ariizumi et al[17], 2011	Retrospective	1989-2008	Japan	HCV+: 42; HCV-: 92	NR	NR	NR	NR	NR	NR
6	Yang et al[21], 2019	Retrospective	Jan 2005-Dec 2011	China	HCV+: 1; HCV-: 167	NR	NR	NR	NR	NR	NR
7	Terakawa et al[22], 2004	Retrospective	Jan 1992-Dec 2001	Japan	HCV+: 7; HCV-: 10	HCV+:64.0 ± 3.0; HCV-: 66.0 ± 3.0	HCV+: 4; HCV-: 8	HCV+: 5.0 ± 1.2; HCV-: 5.1 ± 1.0	NR	HCV+:II: 1, III: 3, IV: 3HCV-: II: 2, III: 4, IV: 4	HCV+:well: 1, moderate: 4; HCV-: well: 1, moderate: 5

¹Values included in this study is obtained after propensity score matching. HCV: Hepatitis C Virus; NR: Not reported.