Role of self-expanding metal stents in patients with malignant colorectal obstruction: A systematic review and meta-analysis

Table 1 Studies included in meta-analysis

	Ref.	Study design	SEMS		Total
			Palliation	BTS
Palliation
1	Ptok[23]-2006-Germany	Prospective, Single Center	48	0	48
2	Repici[22]-2007-Europe	Prospective, Multicenter	44	0	44
3	Im[33]-2008-South Korea	Prospective, Single Center	49	0	49
4	Suh[34]-2010-South Korea	Retrospective, Single Center	55	0	55
5	Jung[35]-2010-South Korea	Retrospective, Single Center	39	0	39
BTS
6	Fregonese[24]-2008-United Kingdom	Prospective and Retrospective, Multicenter	0	36	36
7	Li[36]-2010-China	Prospective, Single Center	0	52	52
Palliation and BTS
8	Meisner[25]-2004-Denmark	Retrospective, Single Center	51	38	89
9	Soto[26]-2006-Spain	Retrospective, Single Center	36	22	58
10	Lee[37]-2007-South Korea	Prospective, Single Center	37	43	80
11	Repici[27]-2008-Europe	Prospective, Multicenter	23	19	42
12	Stipa[28]-2008- Italy	Retrospective, Single Center	9	22	31
13	Branger[29]-2010-France	Retrospective, Single Center	66	27	93
14	Fernandez-Esparrach[10]-2010-Spain	Retrospective, Single Center	38	9	47
15	Lee[44]-2010-United States	Retrospective, Single Center	41	5	46
16	Park[38]-2010-South Korea	Prospective, Single Center	107	44	151
17	Small[11]-2010-United States	Retrospective, Single Center	168	65	233
18	West[30]-2010-United Kingdom	Retrospective, Multicenter	21	6	27
19	Meisner[31]-2011-Denmark	Prospective, Multicenter	257	182	439
Palliative SEMS vs palliative surgery
20	Law[7]-2003-China	Retrospective, Single Center	30	0	61
21	Carne[8]-2004-New Zealand	Retrospective, Single Center	25	0	44
22	Suarez[32]-2009-Spain	Retrospective, Single Center	45	0	98
23	Vemulapalli[45]-2009-United States	Retrospective, Single Center	53	0	123
24	Lee[39]-2011-South Korea	Retrospective, Single Center	71	0	144
SEMS as BTS vs emergency surgery
25	Ng[40]-2006-Hong Kong	Retrospective, Single Center	0	20	60
26	Cheung[41]-2009-China	Randomized Controlled Trial, Single Center	0	24	48
27	Guo[42]-2011-China	Retrospective, Single Center	0	34	92
28	vanHooft[5]-2011-The Netherlands	Randomized Controlled Trial, Multicenter	0	47	98
29	Ho[43]-2011-Singapore	Randomized Controlled Trial, Single Center	0	20	39
30	Abdel-Hamid[46]-2013-Egypt	Randomized Controlled Trial, Single Center	0	30	60
	Total		1313	745	2058

BTS: Bridge to surgery; SEMS: Self-expandable metal stent.