Table 3:

Association between time to colonoscopy and risk for late stage colorectal diagnosis among Veterans with an abnormal FIT/FOBT, 1999–2015 (n=204,271)

Variable	No. of Patients	No. of Patients with Advanced CRC	Unadjusted OR (95% CI)	Adjusted OR (95% CI)
Time to Colonoscopy after abnormal FIT/FOBT
1–3 months	61,483	596	REF	REF
4–6 months	39,851	376	0.97 (0.86–1.11)	0.95 (0.83–1.08)
7–9 months	18,169	168	0.95 (0.80–1.13)	0.92 (0.78–1.09)
10–12 months	10,165	103	1.05 (0.85–1.29)	1.01 (0.82–1.25)
13–15 months	7,365	82	1.15 (0.91–1.45)	1.12 (0.88–1.41)
16–18 months	5,464	72	1.36 (1.07–1.75)	1.33 (1.04–1.70)
19–21 months	4,276	63	1.53 (1.18–1.98)	1.51 (1.16–1.96)
22–24 months	3,589	58	1.68 (1.28–2.20)	1.66 (1.26–2.18)
> 24 months	53,909	539	1.03 (0.92–1.16)	1.08 (0.96–1.22)

Late stage colorectal cancer was defined as patients with CRC stages III and IV according to the American Joint Committee on Cancer staging system.

OR: Odds Ratio; CI: Confidence Interval; No.: Number

Adjusted for age, sex, race/ethnicity, smoking, Charlson Comorbidity Index, and BMI