Baseline characteristics of the study subjects
| Characteristics | Placebo | Omalizumab |
| Subjects n | 11 | 12 |
| Females n | 9 | 8 |
| Males n | 2 | 4 |
| Age yrs | 35 (20–60) | 36 (22–56) |
| Allergen# | ||
| House dust mite | 3 | 3 |
| Cat dander | 5 | 6 |
| Grass | 2 | 2 |
| Birch | 1 | 1 |
| IgE IU·mL−1 | 210 (60–686) | 151 (36–450) |
Data are present as median (range) unless otherwise stated
#: allergen used for nasal challenge