Soderlund 2006.

Methods	RCT via opaque, sealed envelope and random table technique
Participants	Inoperable malignant bile duct obstruction Jaundice 78 had pancreatic cancer
Interventions	10Fr polyethylene OR Self‐expandable metal covered Wallstent
Outcomes	Technical success Theraputic success Complications Median survival Medican stent patency
Notes	N=100
Risk of bias
Bias	Authors' judgement	Support for judgement
Adequate sequence generation?	Low risk	Random table technique
Allocation concealment?	Low risk	Opaque, sealed envelopes
Blinding? All outcomes	High risk
Incomplete outcome data addressed? All outcomes	Low risk	All described
Free of selective reporting?	Low risk	All outcomes reported
Free of other bias?	Unclear risk	Industry‐sponsored