Fig. 1

Colorectal cancer (CRC) screening patterns according to four strata of CRC risk. Fecal occult blood test (FOBT; a), endoscopy (b) and overall CRC screening (c). Screening patterns: “non-screeners”, participants who reported “never” being screened at enrollment and follow-up; “episodic” screeners, participants who were “not-up-to-date” or “up-to-date” at enrollment but “not-up-to-date” at follow-up; “new screeners”, participants who were “never” or “not-up-to-date” at enrollment but “up-to-date” at follow-up; and “regular” screeners, participants who reported being “up-to-date” at both enrollment and follow-up. Overall CRC screening based on status for either FOBT or endoscopy. Values on bars are the proportion of participants within each stratum