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Table 3 Bias risk in the randomized controlled trials (RCTs) as assessed by the Jadad scoring system

From: High ligation of the inferior mesenteric artery during sigmoid colon and rectal cancer surgery increases the risk of anastomotic leakage: a meta-analysis

Studies

Year

Randomization

Blinding

Withdrawals and dropouts

Total

Matsuda K

2015

2

1

1

4

Niu JW

2016

1

0

1

2

Guo YC

2017

2

1

1

4

Zhou JM

2018

1

0

1

2