Table 5: Spirometry results of the 2 late menstrual cycle phases in premenstrual asthma.
| Lutéal Phase (Value/IC 95%) | premenstrual Phase (Value/IC 95%) | p | |
| VC (l) | 3.28 [3.16-3.44] | 3.3 [3.19-3.47] | 0.85 | 
| FVC (l) | 3.27 [3.16-3.44] | 3.3 [3.16-3.48] | 0.64 | 
| PEF (l/s) | 6.3 [5.96-6.79] | 6.26 [6-6.77] | 10-3 | 
| FEV1 (l) | 2.83 +/- 0.48/0.232 | 2.84 [2.74-3.03] | 0.61 | 
| FEV1/VC (%) | 86.23 [84.28-88.62] | 85.98 [83.78-88.27] | 0.95 | 
| FEF75 (l) | 5.65 [5.17-6.23] | 5.57 [5.2-6.19] | 0.40 | 
| FEF50 (l) | 3.74 [3.37-4.3] | 3.71 [3.37-4.27] | 0.85 | 
| FEF25 (l) | 1.67 [1.44-1.90] | 1.64 [1.49-1.84] | 10-3 | 
| FEF25-75 (l) | 3.25 [2.93-3.72] | 3.24 [2.93-3.68] | 0.64 |