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Table 1 Characteristics of US children age 4 to 11 years in NHANES 2001–2004*

From: Active play and screen time in US children aged 4 to 11 years in relation to sociodemographic and weight status characteristics: a nationally representative cross-sectional analysis

  Age category
  4 to 11 years overall 4–5 years 6–8 years 9–11 years
n § 2964 777 1109 1078
Mean age (months) 96.1 59.6 89.7 125.5
% male 50.6% 48.2% 50.4% 52.3%
% Non-Hispanic white 57.8% 57.3% 57.2% 58.5%
% Non-Hispanic black 15.5% 14.4% 15.5% 16.3%
% Mexican-American 13.4% 14.3% 13.4% 12.9%
Median Poverty income ratio 2.0 1.9 2.0 2.1
% Born in US 95.0% 95.7% 94.9% 95.8%
% Obese 16.9% 15.2% 15.1% 19.6%
Mean BMI 18.0 16.4 17.3 19.8
  1. Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared). NHANES, National Health and Nutrition Examination Survey.
  2. *Estimates are weighted to be representative of US children age 4 to 11 years.
  3. ‡ Age at last birthday
  4. § n = unweighted sample size
  5. † BMI ≥95th percentile of the age- and gender-specific CDC BMI growth charts