Table 1– Subject characteristics of asthma patients and healthy controls
AsthmaHealthy controls
Subjects n45
Age years25 (21–27)25 (21–30)
Post-bronchodilator FEV1 % pred98±13112±7
Post-bronchodilator FEV1/FVC0.86±0.070.87±0.11
PC20# mg·mL−10.91 (0.07–12)>8
  • Data are presented as mean (range) or mean±sd, unless otherwise stated. #: geometric mean (95% CI). FEV1: forced expiratory volume in 1 s; % pred: % predicted; FVC: forced vital capacity; PC20: provocative concentration of methacholine causing a 20% fall in FEV1.