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. Author manuscript; available in PMC: 2016 Jun 13.
Published in final edited form as: Genet Med. 2015 Jan 15;17(10):815–821. doi: 10.1038/gim.2014.199

Table 4.

Comparison of Adenoma Characteristics at Referral Based on Race or Ethnicity

Caucasian
(n=5041)
Asian
(n=151)
African
American
(n=382)
Other
(n=595)
P value
n (%)
95% CI
n (%)
95% CI
n (%)
95% CI
n (%)
95% CI
Age at adenoma
diagnosis
mean± SE, 95% CI
45.4±.2 43.5±1.1 43.9±.7 42.9±.6 <0.0001
45–45.8 41.2–45.7 42.5–45.2 41.8–44
0 adenomas 762 (15.1%) 20 (13.3%) 42 (11%) 109 (18.3%) 0.0168
14.1–16.1 8.3–19.7 8–14.6 15.3–21.7
≤10 adenomas 732 (14.5%) 23 (15.2%) 42 (11%) 74 (12.4%) 0.15
13.6–15.5 9.9–22 8–14.6 9.9–15.4
11–19 adenomas 607 (12%) 11 (7.3%) 54 (14.1%) 54 (9.1%) 0.02
11.2–13 3.7–12.7 10.8–18 6.9–11.7
20–99 adenomas 2064 (40.9%) 57 (37.8%) 140 (36.7%) 216 (36.3%) 0.06
39.6–42.3 30–46 31.8–41.7 32.4–40.3
100–999 adenomas 805 (16%) 33 (21.9%) 95 (24.9%) 133 (22.4%) <0.0001
15–17 15.6–29.3 20.6–29.5 19–25.9
≥1000 adenomas 71 (1.4%) 7 (4.6%) 9 (2.4% 9 (1.5%) 0.0086
1.1–1.8 1.9–9.3 1.1–4.4 0.7–2.9

Continuous data were analyzed using ANOVA. Categorical data were analyzed using a χ2 test. 95% confidence intervals of proportions presented with each value.