Table 4.

Reported colonoscopy in the past 10 years, U.S. adults aged 50 to 75, NHIS 2000–2008a

 2000 % (95% CI)2003 % (95% CI)2005 % (95% CI)2008 % (95% CI)Percentage point change, 2000–2008
Overall19.0 (18.0–20.1)29.9 (28.6–31.2)39.4 (38.0–40.9)47.5 (45.9–49.0)+28.5
Race/ethnicity
NH white19.8 (18.6–21.0)31.3 (29.9–32.8)42.3 (40.7–43.9)50.0 (48.2–51.9)+30.2
NH black18.3 (15.3–21.7)24.7 (21.7–27.9)30.3 (27.2–33.5)45.4 (41.0–49.9)+27.1
Hispanic13.9 (11.0–17.5)21.3 (17.5–25.7)25.3 (20.4–30.8)31.7 (27.4–36.3)+17.8
NH Asian12.5 (6.9–21.5)23.3 (16.1–32.3)25.3 (17.4–35.3)41.7 (34.8–48.9)+29.2
Education
>HS22.4 (20.7–24.2)34.6 (32.7–36.6)44.5 (42.7–46.4)54.4 (52.1–56.8)+32.0
HS graduate18.7 (16.9–20.6)29.5 (27.4–31.7)37.7 (35.3–40.2)44.1 (41.4–46.8)+25.4
<HS12.9 (11.2–14.7)19.6 (17.4–22.1)27.7 (25.1–30.6)31.3 (28.2–34.6)+18.4
Time in the United States
Born in United States19.6 (18.5–20.8)30.5 (29.1–31.9)40.7 (39.2–42.3)49.2 (47.5–50.9)+29.6
Immigrant, in United States 10+ years15.4 (12.8–18.5)26.9 (23.2–31.0)31.1 (27.1–35.4)36.8 (32.6–41.1)+21.4
Immigrant, in United States <10 years8.0 (4.7–13.2)9.2 (4.6–17.7)12.0 (6.6–20.9)19.1 (11.9–29.2)+11.1
Family income (% FPL)
500%+23.0 (20.4–25.8)37.4 (34.4–40.5)47.0 (44.1–50.0)57.8 (54.2–61.3)+34.8
400%–<500%20.2 (15.7–25.6)31.1 (26.2–36.5)45.7 (39.6–51.8)52.2 (46.8–57.5)+32.0
300%–<400%18.1 (15.0–21.6)31.7 (28.3–35.3)40.0 (36.1–44.1)46.0 (42.3–49.9)+27.9
200%–<300%17.5 (14.8–20.6)27.5 (24.6–30.5)36.5 (33.2–40.0)44.2 (39.3–49.2)+26.7
<200%15.8 (14.0–17.8)22.0 (20.0–24.2)28.8 (26.6–31.2)33.9 (31.1–36.8)+18.1
Health insurance—ages 50–64
Private non-HMO17.4 (16.0–19.0)28.2 (26.4–30.3)36.7 (34.8–38.5)49.2 (46.9–51.5)+31.8
Private HMO16.9 (14.9–19.2)29.0 (26.4–31.7)36.2 (33.4–39.1)47.5 (43.8–51.3)+30.6
Public17.2 (14.2–20.7)24.3 (21.1–27.9)32.1 (29.0–35.3)39.0 (35.4–42.7)+21.8
Uninsured7.2 (5.4–9.5)11.2 (8.8–14.1)13.2 (10.9–15.9)14.9 (11.7–18.9)+7.7
Health insurance—ages 65–75
Medicare + private27.8 (25.0–30.9)40.0 (36.6–43.6)53.8 (49.9–57.6)59.4 (55.0–63.6)+31.6
Medicare HMO23.6 (18.9–29.1)35.0 (28.2–42.4)43.7 (35.9–51.9)50.7 (43.2–57.7)+27.1
Medicare, no supplemental13.8 (10.1–18.4)26.8 (21.3–33.1)45.0 (39.8–50.3)45.8 (39.4–52.4)+32.0
Medicaid, military, and other government13.3 (9.7–18.0)34.3 (27.0–42.4)45.5 (37.6–53.6)49.6 (42.1–57.1)+36.3
Uninsured or Medicare Part A only13.7 (6.5–26.7)11.9 (6.4–21.1)34.9 (29.9–40.3)42.6 (29.7–56.7)+28.9b
Has usual source of care
Yes (excluding ER)19.9 (18.8–21.0)31.2 (29.9–32.5)41.1 (39.7–42.6)50.0 (48.3–51.6)+30.1
No7.6 (5.4–10.5)12.1 (7.7–18.4)18.7 (14.4–24.0)14.3 (11.4–17.8)+6.7
# Physician visits in past year
2 or more22.3 (21.0–23.6)34.3 (32.8–35.9)44.4 (42.8–46.0)54.2 (52.5–55.9)+31.9
111.6 (9.5–14.1)20.6 (17.1–24.5)31.9 (27.9–36.1)34.7 (31.2–38.3)+23.1
None5.8 (4.4–7.6)12.2 (8.5–17.3)15.4 (12.3–19.0)15.8 (12.3–20.2)+10.0
  • aOverall and subgroup trends are statistically significant at α = 0.05, unless otherwise noted.

  • bTrend for this subgroup is not statistically significant at α = 0.05.