A randomised study of screening for colorectal cancer using faecal occult blood testing: results after 13 years and seven biennial screening rounds

Three randomised trials have demonstrated reduction in mortality from colorectal cancer (CRC) by repeated screening with faecal occult blood tests, including the trial presented here, which is the only one still in progress.To evaluate reduction in mortality after seven screening rounds and the possible influence of compliance on mortality from CRC.At Funen in Denmark, random allocation to biennial screening with Hemoccult-II in 30 967 subjects...