Enhanced recovery after surgery in gastric cancer surgery: Systematic review and meta-analysis of perioperative indwelling drainage tube use

Table 3 Quality assessment of included studies (based on Cochrane Handbook - version 5.4.0)

Ref.	Selection bias		Performance bias	Detection bias	Attrition bias	Reporting bias	Other bias	Jadad score
Kim et al[19], 2004	1	2	1	1	1	1	1	7
Wang et al[20], 2019	1	2	1	1	1	1	1	7
Kim et al[21], 2012	1	1	1	1	2	1	1	5
Abdikarim et al[22], 2015	1	2	1	1	1	1	1	5
Liu et al[23], 2016	1	2	1	1	2	1	1	5
Chen et al[24], 2012	1	2	1	1	2	1	1	6
Wu[25], 2018	2	2	1	1	2	1	1	5
Chen[26], 2019	1	2	1	1	2	1	1	5
Wu[27], 2019	1	2	1	1	2	1	1	5
Ma[28], 2019	1	2	1	1	2	1	1	5
Wang[29], 2017	1	1	1	1	2	1	1	6
Jiang et al[30], 2007	2	3	1	1	3	1	1	4
Fan et al[31], 2019	2	3	1	1	3	1	1	3
Li et al[32], 2016	1	2	2	1	2	1	1	4
Chen[33], 2019	2	3	1	1	3	1	1	3
Ruan et al[34], 2019	2	2	1	1	2	1	1	4
Cheng[35], 2019	2	2	1	1	2	1	1	4
Liu et al[36], 2018	1	2	1	1	2	1	1	4
Li and Huang[37], 2021	1	3	1	1	2	1	1	3
Miao[38], 2021	2	2	1	1	2	1	1	3
Liu and Li[39], 2021	2	3	1	1	3	1	1	3