Valori, R.M.

department endoscopy level quality patient colonoscopy study rating scale rating level c experience procedure scale result dutch programme dimension hospital endoscopy departments outcome indicator audit sint nicolaas netherland score signi ficantly qa programme practice signi validity erasmus mc university grs levels grs items england nicolaa disease gastroenterology system service assurance survey journal measure jonge v quality indicators level b choice quality assurance dutch endoscopy departments process liver screening grs-censu sint nicolaas j staff endoscopic assessment evaluation ficantly endoscopy personnel rotterdam van leerdam improvement proportion english performance information jonge satisfaction cancer safety timeliness booking center rating scale levels colorectal majority colonoscopy performance study health care 919–924