Table 7.

Pathology verification of the surrogate outcome [16]

Characteristic	Polyps sized ≥10 mm N = 949	Histologic advanced neoplasia (non-tumor) N = 920
Indication
Routine/average risk	517(54.5%)	492(53.5%)
Family history	159(16.8%)	161(17.5%)
?FOBT/polyp on sigmoidoscopy	273(28.8%)	267(29.0%)
Age group
<50	54(5.7%)	50(5.4%)
50–59	397(41.8%)	362(39.4%)
60–69	311(32.8%)	310(33.7%)
70–79	150(15.8%)	157(17.1%)
≥80	37(3.9%)	41(4.5%)
Mean age years (SD)
Gender
Female	314(33.1%)	298(32.4%)
Male	635(66.9%)	622(67.6%)
Race/ethnicity
White	799(84.2%)	780(84.8%)
Black	99(10.4%)	88(9.6%)
Asian/Pacific Islander	18(1.9%)	19(2.1%)
Native American	6(0.6%)	6(0.7%)
Multi-racial	6(0.6%)	7(0.8%)
Hispanic	20(2.1%)	19(2.1%)
Missing	1(0.1%)	1(0.1%)