Table 1.
Characteristics | Sample size | Weighted percentagea |
---|---|---|
Body mass index categories | ||
Underweight | 292 | 4.5 |
Normal weight | 4,175 | 61.9 |
Overweight | 1,150 | 15.9 |
Obese | 1,414 | 17.7 |
Sex | ||
Boys | 3,585 | 50.5 |
Girls | 3,446 | 49.5 |
Race/ethnicity | ||
Non-Hispanic White | 2,020 | 61.5 |
Non-Hispanic Black | 2,175 | 14.5 |
Mexican American | 2,090 | 11.8 |
All other race | 746 | 12.2 |
Age | ||
12–14-year old | 3,522 | 50.0 |
15–17-year old | 3,509 | 50.0 |
Family poverty–income ratiob | ||
Low-income family | 2,594 | 27.8 |
Middle-income family | 2,512 | 37.2 |
High-income family | 1,497 | 35.0 |
Cigarette smokingc | ||
Never smoker | 5,208 | 80.8 |
Past smoker | 569 | 8.3 |
Current smoker | 602 | 10.9 |
Physical inactivityd | ||
Physically active | 5,794 | 88.3 |
Physically inactive | 853 | 11.7 |
Interview year | ||
2001–2002 | 1,827 | 19.9 |
2003–2004 | 1,654 | 19.5 |
2005–2006 | 1,613 | 20.0 |
2007–2008 | 933 | 20.2 |
2009–2010 | 1,004 | 20.4 |
These are weighted percentages (after applying NHANES MEC weights), not the corresponding percentages for each of the variable based on their sample sizes in the preceding column
Sample size = 6,603 (excluding missing values)
Sample size = 6,379 (excluding missing values)
Sample size = 6,647 (excluding missing values)