Fig 1.
Look-back periods for evaluating screening and colorectal cancer incidence.
Fig 2.
Selection of cases. CRC–colorectal cancer; SEER–Surveillance, Epidemiology, and End-Results.
Table 1.
Characteristics of colorectal cancer cases diagnosed during 2004–2013 and their matched controls, SEER-Medicare*.
Table 2.
Characteristics of colorectal cancer cases diagnosed during 2004–2013, SEER-Medicare*.
Table 3.
Association of screening/surveillance colonoscopy or flexible sigmoidoscopy with colorectal cancer incidence overall and stratified by selected variables, SEER-Medicare*.
Table 4.
Endoscopist characteristics in relation to the magnitude of the association of CRC incidence and screening endoscopy history, SEER-Medicare*.