Jansen, J.B.

screening cancer cutoff colonoscopy level cutoff level strategy 50 ng /ml life years analysis colorectal adenomas cutoff levels colorectal cancer ficient individual sensitivity attendance 80 years model van ballegooijen m trial result value interval ef ficient strategies ef ficient strategy stage cost-effectiveness speci ficity dutch round blood colorectal cancer screening occult cutoff value treatment table screening round surveillance study terminal phase gastroenterology ef ficient frontier 200 ng /ml life year sensitivity analysis immunochemical health age range hemoccult population netherland assumption test characteristics attendance rates speci colonoscopy capacity occult blood test al gastroenterology vol 0 ng /ml number 40 ng /ml ficity 100 ng /ml mortality program death 3 years erasmus mc microsimulation ages 45 hemoccult ii guideline ef ficient complication cost-effectiveness ratio wilschut boer r