Abstract
In their recent study addressing efficacy oforal vancomycin (OVT) and ursodeoxycholic acid (UDCA) compared to no therapy in pediatric primary sclerosing cholangitis (PSC),Deneau et al.state: "OVT and UDCA are not effective treatments for PSC in children" [1]. Their study shows that the null hypothesis of no effect has not been rejected; a real effect might have been present but missed. Complications take up to 10 years to develop, but their median follow-up was just 4.2 years. The subsequent editorial [2] noted the limitations of a retrospective, propensity-matched study and argues cogently for the need to replace empiric practice with data from well-planned randomized controlled trials (RCTs).
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