Table 1.
Characteristics of US children age 4 to 11 years in NHANES 2001–2004*
| 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 |
Abbreviations: BMI, body mass index (calculated as weight in kilograms divided by height in meters squared). NHANES, National Health and Nutrition Examination Survey.
*Estimates are weighted to be representative of US children age 4 to 11 years.
‡ Age at last birthday
§ n = unweighted sample size
† BMI ≥95th percentile of the age- and gender-specific CDC BMI growth charts