Table 1.
Demographics of Study Cohort
| Characteristic | Full Cohort (N = 7,810,025) |
|
|---|---|---|
| n | % | |
| Age, yr | ||
| 5–8 | 2,154,581 | 28 |
| 9–11 | 1,944,164 | 25 |
| 12–14 | 1,724,497 | 22 |
| 15–17 | 1,567,168 | 20 |
| 18–20 | 419,615 | 5 |
| Sex | ||
| Female | 3,821,081 | 49 |
| Male | 3,988,944 | 51 |
| Race/ethnicity | ||
| Asian | 198,149 | 3 |
| Black | 2,292,236 | 29 |
| Hispanic | 1,771,789 | 23 |
| White | 2,589,294 | 33 |
| Other | 958,557 | 12 |
| Urbanicity | ||
| Large central metro | 2,973,197 | 38 |
| Large fringe metro | 1,280,101 | 16 |
| Medium metro | 1,583,297 | 20 |
| Small metro | 679,014 | 9 |
| Micropolitan | 721,913 | 9 |
| Noncore | 572,503 | 7 |
| Prevalent asthma | 996,843 | 12.8 |