Clinical and physiological characteristics of the subjects studied
| Age | Sex | Atopy | IgE (IU/ml) | FEV1 (% pred) | PC20(mg/ml) | Treatment | |
| Controls | |||||||
| 1 | 24 | M | Y | 700 | 111.1 | >32 | None |
| 2 | 20 | F | N | 17 | 118.3 | >32 | None |
| 3 | 22 | F | Y | 30 | 119.8 | >32 | None |
| 4 | 19 | F | N | <10 | 100.0 | >32 | None |
| 5 | 23 | M | Y | <10 | 97.8 | >32 | None |
| 6 | 22 | F | Y | 22 | 116.0 | >32 | None |
| 7 | 19 | F | Y | <10 | 90.5 | >32 | None |
| 8 | 35 | F | N | <10 | 105.7 | >32 | None |
| 9 | 21 | M | Y | 175 | 136.3 | >32 | None |
| 10 | 22 | F | Y | 46 | 105.6 | >32 | None |
| Mean | 22.7 | 110.1 | |||||
| SE | 1.5 | 4.2 | |||||
| Geometric mean | >32 | ||||||
| Non-steroid treated asthmatics | |||||||
| 1 | 21 | F | Y | NA | 122.3 | 3.85 | S |
| 2 | 19 | F | Y | 442 | 100.3 | 6.92 | S |
| 3 | 21 | F | Y | 229 | 77.4 | 3.49 | S |
| 4 | 20 | F | Y | 727 | 99.0 | 0.59 | S |
| 5 | 20 | F | Y | 266 | 91.3 | 0.29 | S |
| 6 | 21 | F | Y | 275 | 131.4 | 2.21 | S |
| 7 | 23 | M | Y | 1230 | 105.9 | 0.32 | S |
| Mean | 20.7 | 103.9 | |||||
| SE | 0.5 | 6.9 | |||||
| Geometric mean | 1.41 | ||||||
| Steroid treated asthmatics | |||||||
| 1 | 21 | M | Y | 182 | 100.5 | 3.35 | P(10), S |
| 2 | 25 | M | Y | 267 | 69.8 | 1.78 | P(10), S |
| 3 | 41 | F | Y | <10 | 50.2 | <0.03 | BDP (1500), S |
| 4 | 20 | M | Y | 72 | 109.2 | 17.59 | P(10), S |
| 5 | 21 | F | Y | NA | 97.9 | 7.5 | P(10), S |
| 6 | 21 | F | Y | 62 | 85.4 | 0.71 | P(10), S |
| 7 | 55 | F | Y | 26 | 39.7 | NA | BDP (2000), P(10), T, S |
| 8 | 33 | M | Y | NA | 22.9 | NA | P(10), S |
| Mean | 29.6 | 71.9 | |||||
| SE | 4.5 | 11.2 | |||||
| Geometric mean | <1.60 | ||||||
FEV1 = forced expiratory volume in one second; PC20 = provocative concentration of histamine producing a 20% fall in FEV1; S = salbutamol; P = prednisolone (daily dose in mg); BDP = beclomethasone dipropionate (daily dose in μg); T = theophylline; NA= not available.