Table 1 –
Baseline Characteristics of the Participating Subjects
| All subjects | Perceived Allergen Sensitization | |||
|---|---|---|---|---|
| N=253 | Yes N=161 |
No N=92 |
P value* | |
| Age: Years | 13.5±4.2 | 12.9±4.0 | 14.5±4.5 | 0.005 |
| Sex: Female | 120 (47.4%) | 69 (42.9%) | 51 (55.4%) | 0.07 |
| Race/ethnicity | 0.17 | |||
| Caucasian | 111 (43.9%) | 74 (46.0%) | 37 (40.2%) | |
| African American | 39 (15.4%) | 27(16.8%) | 12 (13.0%) | |
| Latino | 61 (24.1%) | 37 (23.0%) | 24 (26.1%) | |
| Asian | 19 (7.5%) | 7 (4.3%) | 12 (13.0%) | |
| Multiracial | 21 (8.3%) | 15 (9.3%) | 6 (6.5%) | |
| Unknown | 2 (0.8%) | 1 (0.6%) | 1 (1.1%) | |
| Aeroallergen sensitization to ≥1 aeroallergen | 193 (76.3%) | 141 (87.6%) | 52 (57.8%) | 7.3×10−8 |
| Season of enrollment | 0.008 | |||
| Spring | 59 (23.3%) | 28 (17.4%) | 31 (33.7%) | |
| Summer | 41 (16.2%) | 25 (15.5%) | 16 (17.4%) | |
| Fall | 88 (34.8%) | 58 (36.0%) | 30 (32.6%) | |
| Winter | 65 (25.7%) | 50 (31.1%) | 15 (16.3%) | |
| Family history of atopy | 189 (74.7%) | 133 (82.6%) | 56 (58.7%) | 5.9×10−5 |
| Allergic rhinitis | 127 (50.2%) | 117 (72.7%) | 10 (10.9%) | 8.4×10−23 |
| Asthma | 118 (46.6%) | 96 (59.6%) | 22 (23.9%) | 3.18×10−8 |
Values are number (%) or mean ±SD.
*
Fisher’s Exact Test was used for all variables except for age where t-test was used.