| FEV1 | forced expiratory volume at the first second |
| FVC | forced vital capacity |
| TLC | total lung capacity |
| ERV | expiratory reserve volume |
| BMI | body mass index |
| FRC | Functional residual capacity |
| FEF25–75 | Mean Forced Expiratory Flow between 25% and 75% of FVC |
| IL | interleukin |
| FEF50 | forced expiratory flow at 50% of FVC |
| TNFα | tumor necrosis factor alpha |
| IgE | immunoglobulin E |
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