Table 1.
Body mass index categories, sociodemographic characteristics, risky behaviors, and interview years among adolescents, 12–17-year old—National Health and Nutrition Examination Survey, 2001–2010 (N = 7,031)
| 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 |
a
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
b
Sample size = 6,603 (excluding missing values)
c
Sample size = 6,379 (excluding missing values)
d
Sample size = 6,647 (excluding missing values)