Meta-analysis of predictive factors for delayed hemorrhage after endoscopic submucosal dissection in early-stage gastric carcinoma

Table 2 Quality assessment form for the 11 included studies

Ref.	Selection (★/4)	Comparability (★/2)	Outcome (★/3)	Total score (★/9)	Quality level
Cai et al[10]	★★★★	★★	★★★	9	High
Nam et al[11]	★★★★	★★	★★★	9	High
Toyokawa et al[12]	★★★★	★★	★★	8	High
Higashiyama et al[13]	★★★★	★★	★★★	9	High
Hashimoto et al[14]	★★★	★★	★★	7	High
Okada et al[15]	★★★★	★★	★★★	9	High
Sugimoto et al[16]	★★★★	★★	★★★	9	High
Mukai et al[17]	★★★	★	★★	6	Middle
Zhu et al[18]	★★★★	★★	★★★	9	High
Koh et al[19]	★★★★	★★	★★★	9	High
Matsumura et al[20]	★★★★	★★	★★★	9	High