Table 2—

Crude and standardized* prevalence of IFG, IGT, total pre-diabetes, and total diabetes and pre-diabetes, NHANES 2005–2006

IFGIGTTotal pre-diabetes (IFG or IGT)Total diabetes and pre-diabetes
n3,1782,8062,8062,806
Crude prevalence
    Combined age-groups (years)
≥1223.9 (20.7–27.2)12.4 (10.0–14.8)27.6 (24.5–30.7)38.7 (34.5–43.0)
≥2025.7 (22.3–29.1)13.8 (11.2–16.5)29.5 (26.2–32.7)42.3 (37.9–46.7)
≥6536.6 (32.0–41.2)26.9 (21.0–32.7)40.4 (34.4–46.3)72.0 (66.7–77.3)
    Age-specific groups (years)
12–1912.7 (8.9–16.6)3.4 (1.4–5.5)16.0 (10.9–21.0)16.3 (11.3–21.2)
20–3913.1 (10.3–15.9)7.3 (4.6–10.0)17.9 (14.1–21.8)21.1 (17.1–25.0)
40–5931.3 (24.3–38.3)13.3 (9.2–17.5)34.6 (28.2–41.0)47.0 (39.7–54.3)
60–7437.9 (31.8–43.9)21.3 (15.4–27.3)36.8 (30.2–43.4)66.7 (59.8–73.6)
≥7535.1 (30.5–39.7)35.1 (26.3–43.9)46.7 (38.7–54.6)75.7 (68.7–82.8)
    Sex by age (years)
Men
    ≥1230.3 (25.5–35.0)12.9 (9.8–16.0)34.0 (29.3–38.7)44.7 (38.9–50.4)
    ≥2032.1 (26.9–37.3)14.6 (11.3–18.0)36.0 (30.8–41.2)48.4 (42.2–54.5)
Women
    ≥1217.9 (15.6–20.3)12.0 (9.2–14.7)21.6 (18.8–24.4)33.2 (29.5–36.8)
    ≥2019.8 (17.3–22.2)13.1 (10.0–16.1)23.4 (20.6–26.3)36.7 (33.1–40.3)
    Race/ethnicity by age (years)
Non-Hispanic white
    ≥1224.3 (20.3–28.2)13.1 (9.7–16.6)27.8 (23.9–31.8)38.6 (33.1–44.1)
    ≥2025.8 (21.6–29.9)14.5 (10.8–18.1)29.3 (25.1–33.6)41.5 (35.8–47.3)
Non-Hispanic black
    ≥1218.7 (14.9–22.6)8.4 (6.4–10.4)22.5 (19.9–25.1)36.5 (32.1–40.9)
    ≥2020.5 (16.2–24.9)10.0 (7.3–12.6)25.1 (22.0–28.1)42.1 (37.2–47.0)
Mexican American
    ≥1224.6 (18.1–31.1)11.2 (6.9–15.4)28.9 (23.2–34.6)41.1 (33.7–48.4)
    ≥2026.8 (18.9–34.7)13.0 (7.8–18.1)31.7 (24.7–38.7)46.4 (37.2–55.7)
Standardized* prevalence
    Combined age-groups (years)
≥1223.5 (20.8–26.2)12.2 (10.3–14.1)27.2 (24.8–29.7)38.1 (35.1–41.1)
≥2025.2 (22.4–28.1)13.6 (11.5–15.8)29.0 (26.4–31.6)41.6 (38.6–44.7)
≥6536.9 (32.1–41.7)27.1 (21.2–32.9)40.8 (34.9–46.7)72.2 (67.0–77.3)
    Age-specific groups (years)
12–1912.4 (8.7–16.1)3.5 (1.3–5.6)15.6 (10.8–20.5)15.9 (11.2–20.7)
20–3912.9 (10.1–15.7)7.4 (4.6–10.1)17.8 (13.9–21.7)20.9 (16.9–24.9)
40–5931.2 (24.3–38.2)13.3 (9.1–17.5)34.5 (28.2–40.8)46.9 (39.5–54.3)
60–7438.2 (32.0–44.4)21.8 (15.8–27.7)37.4 (30.7–44.2)67.4 (60.6–74.1)
≥7535.6 (31.0–40.2)34.7 (25.6–43.8)46.8 (39.0–54.6)75.6 (68.4–82.7)
    Sex by age (years)
Men
    ≥1230.1 (25.9–34.3)13.0 (10.7–15.4)33.9 (30.0–37.7)44.7 (40.7–48.8)
    ≥2031.9 (27.3–36.5)14.7 (12.0–17.4)35.7 (31.3–40.2)48.3 (43.7–52.8)
Women
    ≥1217.2 (15.2–19.1)11.6 (8.9–14.3)21.0 (18.0–23.9)31.8 (28.4–35.2)
    ≥2019.0 (16.9–21.0)12.8 (9.8–15.8)22.8 (19.8–25.8)35.4 (32.1–38.7)
    Race/ethnicity by age (years)
Non-Hispanic white
    ≥1222.5 (19.2–25.8)12.2 (9.8–14.5)26.2 (23.1–29.3)35.7 (32.0–39.5)
    ≥2024.0 (20.6–27.4)13.5 (10.9–16.2)27.7 (24.4–31.0)38.7 (34.8–42.5)
Non-Hispanic black
    ≥1219.4 (16.2–22.6)8.8 (6.3–11.4)23.3 (20.7–25.9)39.4 (36.8–42.0)
    ≥2020.9 (17.3–24.5)10.1 (7.1–13.1)25.4 (22.5–28.2)44.1 (41.2–46.9)
Mexican American
    ≥1226.0 (19.4–32.6)12.8 (9.7–16.0)29.9 (25.2–34.5)47.3 (41.0–53.6)
    ≥2027.8 (20.3–35.4)14.4 (10.6–18.1)32.0 (26.5–37.4)52.0 (44.5–59.6)
  • Data are % (95% CI). Values by age alone and by sex in people aged ≥12 and ≥20 years include those of race/ethnic groups not listed separately.

  • *

    * Estimates for the total population aged ≥12 and ≥20 years and for race/ethnic groups were age and sex standardized, estimates for age-specific groups including those aged ≥65 years were sex standardized, and estimates for sex groups were age standardized (all using the 2000 U.S. Census population). IFG, FPG 5.6–7.0 mmol/l; IGT, 2-h plasma glucose 7.8–11.1 mmol/l. Total diabetes includes diagnosed diabetes (determined by self-report on interview) and undiagnosed diabetes (FPG ≥7.0 mmol/l or 2-h plasma glucose ≥11.1 mmol/l).