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. Author manuscript; available in PMC: 2024 Jul 1.
Published in final edited form as: Gastroenterology. 2023 Mar 21;165(1):252–266. doi: 10.1053/j.gastro.2023.03.206

Appendix Figure 2.

Appendix Figure 2.

National Colonoscopy Study flowchart by screening round

Screening colonoscopy (SCO), High sensitivity guaiac fecal occult blood test (HSgFOBT)

1, 2, 3, 4: Had a colonoscopy and later went on to participate in more screening in some form (i.e. did not discontinue forever), n = 10, 6, 5, 2, respectively

5: 1 patient crossed over in round 4. They did not receive an FOBT kit in round 4.