Early precut sphincterotomy and the risk of endoscopic retrograde cholangiopancreatography related complications: An updated meta-analysis

Table 1 Study quality characteristics of randomized controlled trials

Ref.	Were patients randomized	Was generation of allocation sequence adequate	Eligibility criteria mentioned	Both patients and clinicians blinded	Participants baseline characteristics similar in both groups	Treatment allocation concealed	Study adequately powered to asses significant clinical outcome
Tang et al[10]	Yes	Yes	Yes	Partially fulfilled	Yes	Yes	No
Zhou et al[19]	Yes	Yes	Partially	Partially fulfilled	Yes	Yes	N/A
de Weerth et al[12]	Yes	N/A	Yes	Partially fulfilled	Yes	N/A	N/A
Khatibian et al[18]	Yes	Yes	Yes	Partially fulfilled	Yes	Yes	Partially
Manes et al[20]	Yes	Yes	Yes	Partially fulfilled	Yes	N/A	No
Cennamo et al[11]	Yes	Yes	Yes	Partially fulfilled	Yes	Yes	No
Swan et al[14]	Yes	Yes	Yes	Yes	Yes	Yes	No