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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 Table 3a.

Comparison Between NCS Study 1 and Study 2

Study 1 – Screening-Colonoscopy vs. Usual Care Study 2 – SCO vs. Sequential HSgFOBT Adherence
Accrual 2000-2002 2004-2008
Follow-up 2002 2012
Adherence to baseline colonoscopy 88.9% (622/700) 83.6% (1473/1761)

High sensitivity fecal occult blood test (HSgFOBT)