Table 3.

Association between odds of FOBT+, CRC− results at an individual screening round and patient characteristics and between colonoscopy risk among those with FOBT+ results and patient characteristics based on logistic regression.

		FOBT+, CRC−		Colonoscopy following FOBT+
	OR	95% CI	p	OR	95% CI	p
Age
50–54	1	ref	ref	1	ref	ref
55–59	1.08	(0.99, 1.17)	0.091	0.91	(0.73, 1.12)	0.371
60–64	1.25	(1.14, 1.36)	<0.001	0.93	(0.74, 1.16)	0.520
65–69	1.42	(1.30, 1.56)	<0.001	0.90	(0.72, 1.13)	0.358
69–74	1.61	(1.47, 1.76)	<0.001	0.85	(0.67, 1.06)	0.151
75–79	1.80	(1.64, 1.98)	<0.001	0.58	(0.46, 0.72)	<0.001
Year of exam
1997–1998	1	ref	ref	1	ref	ref
1999–2000	1.19	(1.09, 1.30)	<0.001	1.74	(1.43, 2.12)	<0.001
2001–2002	1.11	(1.01, 1.22)	0.023	2.00	(1.61, 2.47)	<0.001
2003–2004	1.19	(1.08, 1.32)	<0.001	2.63	(2.07, 3.34)	<0.001
2005–2006	1.02	(0.92, 1.14)	0.650	1.95	(1.52, 2.49)	<0.001
2007–2009	1.14	(1.04, 1.24)	0.005	2.48	(2.00, 3.07)	<0.001
Sex
Male	1	ref	ref	1	ref	ref
Female	0.75	(0.71, 0.79)	<0.001	0.91	(0.8, 1.03)	0.136
Race
White	1	ref	ref	1	ref	ref
Asian/Pacific Islander	1.88	(1.74, 2.03)	<0.001	0.76	(0.63, 0.92)	0.005
Black	1.47	(1.29, 1.68)	<0.001	1.13	(0.81, 1.57)	0.483
American Indian/Alaskan Native	1.42	(1.03, 1.96)	0.035	1.20	(0.50, 2.90)	0.688
Number of prior FOBTs
0	1	ref	ref	1	ref	ref
1	0.77	(0.73, 0.83)	<0.001	1.48	(1.25, 1.76)	<0.001
2	0.64	(0.58, 0.70)	<0.001	1.66	(1.29, 2.13)	<0.001
3	0.57	(0.50, 0.64)	<0.001	1.90	(1.32, 2.75)	0.001
4+	0.48	(0.42, 0.55)	<0.001	1.94	(1.29, 2.91)	0.002