Table 2.

Patient demographics and findings at screening colonoscopy (N = 3,317)

VariablePatients, n (%)
Demographic characteristics
Age, y
50–592,498 (75.3)
60–69675 (20.4)
70–79144 (4.3)
Sex
Men1,682 (50.7)
Women1,635 (49.3)
Race/ethnicity
White, non-Hispanic1,173 (35.4)
Black, non-Hispanic1,618 (48.8)
Hispanic267 (8.0)
Other238 (7.2)
Missing21 (0.6)
Colonoscopy findingsa
Normal1,919 (57.8)
Hyperplastic polyps434 (13.1)
Tubular adenomas < 10 mm780 (23.5)
Advanced neoplasiab184 (5.6)

NOTE: Percentages for demographic characteristics may exceed 100% because of rounding.

  • aColonoscopic findings defined by most advanced lesion.

  • bAdvanced neoplasia defined as a tubular adenoma ≥1 cm in size, a tubulovillous or villous adenoma of any size, and the presence of high-grade dysplasia or cancer.