Table 1.
Demographic Characteristics, by Sexa.
| Girls | Boys | P Value | |
|---|---|---|---|
| Total | 49.8 | 50.2 | |
| Race/ethnicity | |||
| White | 49.2 | 50.9 | .472 |
| Black | 50.0 | 50.0 | |
| Hispanic | 50.6 | 49.5 | |
| Other race | 53.8 | 46.2 | |
| Income | |||
| <100% | 50.4 | 49.6 | .835 |
| 100% to 199% | 51.0 | 49.0 | |
| 200% to 299% | 49.3 | 50.7 | |
| 300% to 399% | 50.0 | 50.0 | |
| 400% to 499% | 46.6 | 53.4 | |
| >500% | 49.3 | 50.8 | |
| Missing | 52.3 | 47.7 | |
| Grade | |||
| Middle school | 49.5 | 50.5 | .716 |
| High school | 50.1 | 49.9 | |
| Age | |||
| 12 | 50.0 | 50.0 | .277 |
| 13 | 50.6 | 49.4 | |
| 14 | 52.3 | 47.7 | |
| 15 | 45.5 | 54.5 | |
| 16 | 48.7 | 51.3 | |
| 17 | 53.1 | 46.9 | |
| 18 | 47.7 | 52.4 | |
| 19 | 48.4 | 51.6 | |
a
P value represents adjusted Wald test for differences in demographics by sex.