Comparison of endoscopic submucosal dissection with surgical gastrectomy for early gastric cancer: An updated meta-analysis

Table 1 Main characteristics of included studies

Ref.	Year/region	Number		Mean age		Sex (M/F)		Tumor size (mm)		Follow up (mo)		NOS
		ESD	Surgery	ESD	Surgery	ESD	Surgery	ESD	Surgery	ESD	Surgery
Chiu et al[13]	2012/China	74	40	66.3	67.0	49/25	23/17	18.5 (8-40)	24.7 (10-40)	/		6
Park et al[14]	2014/Korea	132	132	73.9	74.4	97/35	88/44					7
Kim et al[15]	2014/Korea	142	71	62.0	56.7	94/48	58/13	/	/	76.7 ± 16.5	65.5 ± 16.5	6
Cho et al[16]	2015/Korea	88	88	61.8	61.3	63/25	62/26	21.8 ± 12.1	21.4 ± 10.1	77 (18-107)	78 (11-113)	7
Song et al[17]	2015/China	29	59	65.3	45.8	15/14	38/21			26.9 ± 8.5	22.3 ± 9.4	7
Fukunaga et al[18]	2016/Japan	74	74	67.3	67.1	57/17	58/16	23.1 ± 10.1	24.7 ± 11.4	43.5 (26.3-76)	62.9 (36.5-91.7)	8
Gong et al[19]	2016/Korea	40	39	65	60	35/5	35/4	17.5 (13.0-24.8)	24 (16-35)	63.2 (53.6-83.5)	60.3 (58.4-68.7)	7
Ryu et al[20]	2016/Korea	81	144	63.65	61.37	59/22	118/26	19.32 ± 11.31	20.55 ± 10.68	78.12 ± 9.72	80.56 ± 8.92	7
Najmeh et al[21]	2016/Canada	30	37	74	75	23/7	24/13	/	/	20 (5-56)	26.5 (11-94)	7
Shin et al[22]	2017/Korea	175	100	61.7	60.5	129/46	73/27	/	/	56 (45-58)	53 (44-60)	8
Jeon et al[23]	2017/Korea	117	117	59.9	59.5	82/35	81/36	18 ± 11.0	18 ± 10	57.0 (35.5-65.5)	58 (49.0-61.0)	8
Park et al[24]	2017/Korea	81	81	55.0	54.2	33/48	42/39	10.6 ± 5.2	10.3 ± 5.2	48.1 (33.6-71.4)	60 (34.0-70.1)	8
Hahn et al[25]	2017/Korea	817	1206	61.9	57.0	605/212	752/454	13.0 ± 9.7	16.8 ± 11.0	37.5 (26.2-59.4)	57.34 (37.63-60.47)	8
Lee et al[26]	2017/Korea	522	522	61	61	366/156	370/152	25 (20-35)	25 (21-35)	52.7 (37.7-67.9)	59.2 (47.9-63.4)	8

ESD: Endoscopic submucosal dissection; NOS: Newcastle-Ottawa Scale.