Table 1.
Demographic Characteristics
| Variable | All (N = 2,120) | Cohort C (n = 669) | Cohort D (n = 588) | Cohort E (n = 863) | P Value* |
|---|---|---|---|---|---|
| Sex, M, n (%) | |||||
| No | 1,105 (52.1) | 344 (51.4) | 298 (50.7) | 463 (53.7) | 0.49 |
| Yes | 1,015 (47.9) | 325 (48.6) | 290 (49.3) | 400 (46.3) | |
| Race, n (%) | |||||
| Asian | 157 (7.8) | 61 (9.4) | 47 (8.0) | 49 (6.3) | <0.001 |
| Black | 126 (6.3) | 60 (9.2) | 43 (7.4) | 23 (3.0) | |
| Mixed | 229 (11.4) | 47 (7.2) | 57 (9.7) | 125 (16.1) | |
| Other | 469 (23.4) | 130 (20.0) | 115 (19.7) | 224 (28.9) | |
| White | 1,027 (51.1) | 351 (54.1) | 323 (55.2) | 353 (45.6) | |
| Hispanic ethnicity, n (%) | |||||
| Yes | 870 (42.1) | 204 (31.0) | 193 (32.9) | 473 (57.6) | <0.001 |
| No | 1,196 (57.9) | 455 (69.0) | 393 (67.1) | 348 (42.4) | |
| Asthma at baseline, n (%) | |||||
| No | 1,646 (82.2) | 536 (86.3) | 465 (82.9) | 645 (78.7) | <0.001 |
| Yes | 356 (17.8) | 85 (13.7) | 96 (17.1) | 175 (21.3) | |
| Parental education, n (%) | |||||
| Did not finish high school | 300 (14.8) | 107 (16.5) | 61 (10.7) | 132 (16.3) | 0.0105 |
| High school diploma or some college | 1,167 (57.6) | 372 (57.4) | 352 (62.0) | 443 (54.6) | |
| College diploma or greater | 560 (27.6) | 169 (26.1) | 155 (27.3) | 236 (29.1) |
*
P value calculated using the chi-squared test.