TABLE 3

Demographic Distributions of the Weighted Adjusted Proportion (%) of US Children With BLLs (µg/dL) at the 97.5th Percentile or Higher, Versus Below the 97.5th Percentile (NHANES 2011–2014)

<97.5th Percentile (95% Confidence Interval)≥97.5th Percentile (95% Confidence Interval)Pa
Age, y
 1–238.0 (36.1–39.9)52.6 (27.8–76.2).04
 3–443.0 (40.0–46.0)37.0 (19.3–59.1)
 519.0 (16.9–21.3)10.3 (5.3–19.3)
Sex
 Male50.9 (48.3–53.5)61.7 (37.8–81.1).43
 Female49.1 (46.5–51.7)38.3 (18.9–62.3)
Race and ethnicity
 All Hispanic27.4 (21.3–34.5)13.7 (4.8–33.4).06
 Non-Hispanic blacks14.8 (11.2–19.2)30.9 (10.4–63.3)
 Non-Hispanic whites52.8 (44.2–61.2)52.8 (19.7–83.6)
 Non-Hispanic Asians5.1 (3.9–6.6)2.6 (0.4–16.6)
Annual household income
 <$20 00020.6 (17.3–24.4)40.8 (30.1–52.4).006
 ≥$20 00079.4 (75.6–82.7)59.2 (47.6–69.9)