Subject no. | Age (years) | Sex | PD20 (μg) | FEV * (% pred) | FEV1 (% pred) |
---|---|---|---|---|---|
1 | 45 | M | 890 | 113 | 120 |
2 | 23 | F | 55 | 95 | 97 |
3 | 47 | F | 85 | 92 | 89 |
4 | 45 | M | 170 | 110 | 114 |
5 | 29 | M | 538 | 97 | 100 |
6 | 33 | F | 652 | 99 | 97 |
7 | 24 | F | 676 | 112 | 109 |
8 | 18 | F | 47 | 89 | 84 |
9 | 23 | F | 89 | 107 | 110 |
10 | 40 | F | 1039 | 95 | 98 |
11 | 28 | M | 20 | 94 | 94 |
12 | 56 | F | 154 | 100 | 100 |
13 | 31 | F | 120 | 95 | 93 |
14 | 39 | M | 770 | 105 | 109 |
15 | 21 | M | 466 | 95 | 96 |
16 | 39 | M | 219 | 89 | 88 |
Mean | 33.8 | 99.2 | 99.9 | ||
SD | 11.0 | 7.9 | 10.0 | ||
Geometric mean | 215 |
FEV1 * = forced expiratory volume in one second performed prior to sputum induction on day without methacholine challenge.
FEV1 = forced expiratory volume in one second performed prior to methacholine challenge.
PD20 = concentration of methacholine provoking a 20% reduction in FEV1.