Endoscopic biliary treatment of unresectable cholangiocarcinoma: A meta-analysis of survival outcomes and systematic review

Table 1 Summary of included studies

Ref.	Country	Study type	Total patients	Mean age	Female gender (%)	Chemotherapy
Sampath et al[23], 2016	United States	Case-Control	25	69.7	10 (40.0)	19 (76)
Hu et al[21], 2016	China	RCT	63	71.4	32 (50.8)	-
Wu et al[26], 2017	China	Case-Control	71	57.9	28 (39.2)	59 (83)
Cui et al[25], 2017	China	Case-Control	39	64.7	17 (43.5)	2 (5)
Yang et al[22], 2018	China	RCT	65	63.2	32 (49.2)	-
Bokemeyer et al[24], 2019	Germany	Case-Control	44	67	-	13 (30)

RCT: Randomized controlled trial.