| Characteristic | Assess | Analysis | Controls |
| Total numbers | 85 | 80 | 40 |
| Male (n) | 42 | 42 | 23 |
| Female (n) | 38 | 38 | 17 |
| Age (median ± SD) | 37.1 ± 13.3 | 37.2 ± 13.2 | 36.5 ± 11.7 |
| (mo., range) | (12 – 60) | (12 - 60) | (11 – 60) |
| IgE (IU/mL) | 52.5 ± 37.6 | ||
| (range) | (14 – 128) | ||
| Frequency of Asthma symptoms | 2.2 ± 4.5 | 2.1 ± 2.2 | |
| (times/mo.) | (1- 4) | (1 – 4) | |
| Nocturnal coughs and awakenings | 5.8 ± 4.5 | 4.6 ± 3.4 | |
| (times/mo.) | (1 – 25) | (2 - 25) |