Fig. 1

Study Profile. ^†784 patients whose FS screening was performed by an endoscopist other than the main endoscopist at that centre, 536 patients screened at one pilot centre that had far fewer participants than the other centres and where there were two main endoscopists rather than one, 367 patients who were screened within the first two months at one centre where the pathologist was found to be over-diagnosing adenomas, 93 participants with CRC diagnosed at baseline and 4,361 participants whose exam was classed as incomplete by the endoscopist. ^‡Four patients had incident CRC diagnosed at both sub-sites. ^§Three patients had CRC as the underlying cause of death but the sub-site specific cause could not be determined as CRC was diagnosed at both sub-sites