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Table 2 The key characteristics of the included studies

From: Endoscopic resection versus surgery for early gastric cancer and precancerous lesions: a meta-analysis

Year of publication First author Country Duration Patients Mean age Sex (M/F) Depth of invasion (mucosal/submucosal) Differentiation (differentiation/ undifferentiation) Follow-up (month) Score
2015 Cho JH Korea 2003.5–2007.13 ESD 288
Surgery 173
ESD 62.2 ± 9.8
Surgery 59.4 ± 11.5
ESD 203/85
Surgery 115/58
ESD 268/20
Surgery 136/37
ESD 280/8
Surgery 104/69
ESD 77
Surgery 78
******
2015 Song WC China 2007.8–2012.3 ESD 29
Surgery 59
ESD 65.3 ± 7.5
Surgery 45.8 ± 6.7
ESD 15/14
Surgery 38/21
ESD 27/2
Surgery 47/12
ESD 26/3
Surgery 47/12
ESD 26.9 ± 8.5
Surgery 22.3 ± 9.4
*****
2015 Choi IJ Korea 2002.1–2007.12 ER 261
Surgery 114
ER
62
Surgery
62
ER 195/66
Surgery 88/26
NO ER200/61
Surgery 75/39
ER74.9
Surgery 78.1
******
2015 Kim YI Korea 2001–2009 ER 165
Surgery 292
ER
62
Surgery
60
ER 122/43
Surgery 217/75
ER 130/35
Surgery 250/42
ER156/9
Surgery 261/31
ER49.2
Surgery 59.3
*****
2014 Park CH Korea 2007.1–2012.12 ESD 132
Surgery 132
ESD 73.9 ± 3.5
Surgery74.4 ± 3.7
ESD 97/35
Surgery 88/44
ESD123/9
Surgery 123/9
ESD 120/12
Surgery 121/11
ESD 17.6
Surgery 24.2
*****
2014 Kim DY Korea 2004.1–2007.7 ESD 142
Surgery 71
ESD 62.0 ± 10.3
Surgery 56.7 ± 12.0
ESD 94/48
Surgery 58/13
ESD135/7
Surgery 62/9
ESD127/15
Surgery 54/17
ESD 76.7 ± 16.5
Surgery 65.5 ± 16.5
******
2014 Chung MW Korea 2005.1–2010.12 ESD 76
Surgery 149
ESD 61.1 ± 12.6
Surgery 56.7 ± 12.8
ESD 44/32
Surgery 72/77
NO NO ESD 41.7 ± 22.6
Surgery 42.8 ± 17.3
*****
2012 Chiu PW China 1993.1–2010.12 ESD 74
Surgery 40
ESD
66.3
Surgery
67
ESD 49/25
Surgery 23/17
ESD66/8
Surgery 19/21
NO ESD 27
Surgery 77.6
*****
2011 Choi KS Korea 1997.1–2002.8 EMR 172
Surgery 379
EMR
59.3 ± 9.1
Surgery 58.4 ± 10.3
EMR 127/45
Surgery 286/93
EMR
156/16
Surgery 342/37
NO NO ******