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. Author manuscript; available in PMC: 2022 Jun 22.
Published in final edited form as: J Med Screen. 2021 Dec 13;29(2):92–98. doi: 10.1177/09691413211045103

Table 3:

Lifetime predicted loss of benefit and harms due to screening delays.

CRC Incidence per 10,000 Life Years Gained per 10,000 Number of Colonoscopies per 10,000
Scenario Overall Late Stage (III or IV)
No screening 23.7 11.6 ------- -------
Guideline concordant, relative to no screening   7.7   2.3 2,727.1 464.4
Change in lifetime outcomes, relative to guideline-concordant screening Absolute and (Percent) Difference, Relative to Guideline-Concordant Screening
3-month delay in follow-up colonoscopy after an abnormal FIT 0.1 (1.2%) 0.1 (2.6%) −0.4 (−0.0%) −4.1 (−0.9%)
3-month delay in receipt of surveillance colonoscopy 0.1 (0.7%) 0.0 (1.1%) −11.2 (−0.4%) −6.9 (−1.5%)
6-month delay in receipt of surveillance colonoscopy 0.1 (1.3%) 0.0 (1.1%) −11.4 (−0.4%) −12.6 (−2.7%)
1-year delay in return to screening after normal surveillance or follow-up colonoscopy 0.1 (1.2%) 0.1 (2.4%) −14.1 (−0.5%) −4.4 (−0.9%)
6-month delay in follow-up colonoscopy after an abnormal FIT 0.2 (2.0%) 0.1 (4.5%) −31.9 (−1.2%) −6.4 (−1.4%)
1 year delay in screening initiation 0.3 (3.8%) 0.1 (4.6%) −44.1 (−1.6%) −12.5 (−2.7%)
3-month delay in return to FIT screening after a normal FIT 0.7 (8.9%) 0.1 (6.1%) −59.6 (−2.2%) −33.5 (−7.2%)
5-year delay in return to screening after normal surveillance or follow-up colonoscopy 0.5 (6.3%) 0.3 (12.1%) −63.2 (−2.3%) −20.3 (−4.4%)
Consistent modest delays 1.3 (16.3%) 0.4 (17.9%) −154.7 (−5.7%) −58.5 (−12.6%)
6-month delay in return to FIT screening after a normal FIT 1.6 (20.4%) 0.5 (20.2%) −155.0 (−5.7%) −70.1 (−15.1%)
5-year delay in screening initiation 1.7 (21.7%) 0.6 (26.8%) −337.0 (−12.4%) −65.3 (−14.1%)
Consistent large delays 3.7 (48.6%) 1.5 (64.1%) −612.3 (−22.5%) −150.3 (−32.4%)