Endoscopic ultrasound-guided vs endoscopic retrograde cholangiopancreatography biliary drainage for obstructed distal malignant biliary strictures: A systematic review and meta-analysis

Table 2 Jadad scale scores for the studies selected

Study	Jadad scale scoring
	Randomization	Appropriate randomization	Blinding	Appropriate blinding	Losses described	Total
Bang et al[16]	Yes	Yes	No	No	Yes	3
Paik et al[15]	Yes	Yes	No	No	Yes	3
Park et al[14]	Yes	Yes	No	No	Yes	3