TABLE 1

Characteristics of US Children and Adolescents Aged 2–18 y, NHANES 2003–2004 to 2011–2012

2003–20042005–20062007–20082009–20102011–2012P
All, n35803840299830933036
Age group, %
 2–5 y21.0721.2022.7222.3221.93.94
 6–11 y35.5335.5534.5934.7135.93
 12–18 y43.4043.2542.6942.9642.14
Gender, %
 Boys51.2551.5251.3950.8550.44.97
 Girls48.7548.4848.6149.1549.56
Race or ethnicity, %
 Non-Hispanic white60.8660.0558.5055.9553.70.54
 Non-Hispanic black15.0114.5614.7913.4614.86
 Mexican American12.5313.2713.5715.2715.11
 Other race11.6012.1213.1415.3216.33