Baseline characteristics of the patients
| Global | Premenstrual asthma# | No premenstrual asthma# | p-value | |
| Age yrs | 28.6±8.8 (14–47) | 26.9±6.5 (16–37) | 28.78±9.93 (14–47) | 0.41 |
| Weight kg | 63.23±12.3 | 63.65±14.15 | 62.97±11.23 | 0.84 |
| FVC % | 93.69±13.66 | 91.25±12.49 | 95.22±14.31 | 0.31 |
| FEV1 % | 90.61±18.1 | 88.2±15.9 | 92.11±19.4 | 0.45 |
| Tiffenau | 79.98±11.6 | 80.2±11.5 | 79.8±11.9 | 0.92 |
Data are presented as mean±sd (range) or mean±sd, unless otherwise stated. FVC: forced vital capacity; FEV1: forced expiratory volume in 1 s. #: semi-objective criteria in the first cycle.