Systematic review and meta-analysis on the prophylactic role of non-steroidal anti-inflammatory drugs to prevent post-endoscopic retrograde cholangiopancreatography pancreatitis

Table 3 Reported quality variables in included studies

Ref.	Randomization	Power calculations	ITT	Blinding	Concealment
Cheon et al[22]	Yes	Yes	Yes	Yes	Yes
Döbrönte et al[23]	Yes	Yes	No	Yes	Yes
Döbrönte et al[24]	Yes	Yes	No	Yes	Yes
Elmunzer et al[25]	Yes	Yes	Yes	Yes	Yes
Khoshbaten et al[26]	Yes	Yes	No	Yes	Yes
Montaño Loza et al[27]	Yes	Yes	No	Yes	Yes
Montaño Loza et al[28]	Yes	Yes	No	Yes	Not reported
Murray et al[29]	Yes	Yes	No	Yes	Yes
Otsuka et al[30]	Yes	Yes	No	Yes	Yes
Park et al[31]	Yes	Yes	No	Yes	Yes
Senol et al[32]	Yes	Yes	No	Not reported	Not reported
Sotoudehmanesh et al[33]	Yes	Yes	No	Yes	Yes
Zhao et al[34]	Yes	Yes	No	No	Not reported