Characteristics of asthmatic patients
| Patient | Age (years) | FEV1 (% predicted) | PC20(mg/ml) | Atopy |
|---|---|---|---|---|
| 1 | 21 | 74.8 | 0.114 | C, GP, HD |
| 2 | 35 | 95.8 | 8.0 | C, GP, HD |
| 3 | 18 | 77.5 | 0.58 | GP, HD |
| 4 | 25 | 108.8 | 0.43 | HD, GP, C |
| 5 | 24 | 113.1 | 4.49 | GP, HD |
| 6 | 22 | 99.8 | 0.29 | GP |
| 7 | 29 | 93 | 3.6 | C, HD, GP |
| 8 | 35 | 80.9 | 4.5 | C, HD |
| Mean (SEM) | 26.1 (2.2) | 93.0 (5.1) | 2.75 (1.0) |
PC20, dose of methacholine required to cause a 20% drop in FEV1.
HD, house dust mite; GP, grass pollen; C, cat.