| AI | Artificial intelligence |
| ATS | American Thoracic Society |
| AUC | Area under the curve |
| COPD | Chronic obstructive pulmonary disease |
| CT | Computed tomography |
| ERS | European Respiratory Society |
| FEF25–75% | Forced expiratory flow between 25% and 75% of forced vital capacity |
| FEV1 | Forced expiratory volume in one second |
| fSAD | Functional small airway disease |
| FVC | Forced vital capacity |
| GLI | Global Lung Function Initiative |
| MMEF | Maximal mid-expiratory flow |
| PHC | Primary healthcare |
| RCT | Randomised controlled trial |
| SAD | Small airway dysfunction |
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