Table 1.

Proportion of patients with High-Risk Findings at Third Colonoscopy According to Baseline Characteristics

Baseline Characteristic	n	high risk findings @ 3rd exam (n=58)	% high risk findings @ 3rd exam
Age
<40	11	0	0%
40–49	107	10	9%
50–59	235	24	10%
60–69	156	19	12%
70+	55	5	9%
Gender
Male	329	37	11%
Female	235	21	9%
Race
Caucasian	492	55	11%
African American	22	1	5%
Other	50	2	4%
Family History Colorectal Cancer
No	284	23	8%
Yes	191	24	13
Unknown	89	11	12%
Smoking History*
Never	250	22	9%
Former	235	32	14%
Current	74	4	5%

^*5 subjects missing smoking history