Table 1.

Characteristics of included studies

Ref.	Country	Patients	Lesions	Article	Baseline consistency	Follow-up	End-points
Min et al[21] 2009	South Korea	ESD 243EMR 203	ESD 243EMR 203	Full text	No	29 (4-44) m	Operation time, en bloc resection rate, histologic curative resection rate, bleeding, perforation,recurrence
Oka et al[22]2006	Japan	ESD 185EMR 711	ESD 195EMR 825	Full text	No	ESD 19.4 ± 9.2 mEMR 83.2 ± 34.6 m	Operation time, en bloc resection rate, histologic curative resection rate, bleeding, perforation, recurrence
Oda et al[8]2006	Japan	655	ESD 303EMR 411	Full text	No	39 (5-60) m	En bloc resection rate, histologic curative resection rate, perforation, recurrence (residual)
Catalano et al[23] 2009	Italy	45	ESD 12EMR 36	Full text	Not Recorded	31 (12-71) m	Operation time, en bloc resection rate, histologic curative resection rate, bleeding, perforation, recurrence
Odashima et al[24] 2006	Japan	ESD 57EMR 80	ESD 57EMR 80	Abstract	Not Recorded	Not Recorded	Histologic curative resection rate
Hoteya et al[25] 2007	Japan	Not Recorded	ESD 304EMR 350	Abstract	Not Recorded	Not Recorded	En bloc resection rate, histologic curative resection rate, delayed bleeding rate
Hoteya et al[26] 2010	Japan	Not Recorded	ESD 40EMR 22	Full text	No	Not Recorded	Operation time, en bloc resection rate, histologic curative resection rate, perforation, recurrence
Nakamoto et al[27] 2009	Japan	ESD 106EMR 71	ESD 122EMR 80	Full text	Yes	54 (12-89) m	Operation time, en bloc resection rate, histologic curative resection rate, perforation, bleeding
Watanabe et al[28] 2010	Japan	ESD 219EMR 146	ESD 219EMR 146	Full text	Yes	ESD 14.3 mEMR 17.8 m	En bloc resection rate, histologic curative resection rate, perforation, recurrence
Tanabe et al[29] 2014	Japan	ESD 421EMR 359	ESD 421EMR 359	Full text	No	ESD 65 mEMR 73 m	Recurrence, overall survival

Follow up time (mo) is expressed as median (range) of mean (± SD) when appropriate. ESD: Endoscopic submucosal dissection; EMR: Endoscopic mucosal resection.