Radiological airway characteristics
| Normal | Asthma | p Value | |
|---|---|---|---|
| Total number of airways | 90 | 80 | |
| Number of airway pairs | 28 | 24 | |
| Mean Aimean (mm2) (±95% CI) | 12.3±2.2 | 7.5±1.4 | <0.001 |
| Range of Aimean (mm2) | 1.3–52.2 | 0.8–33.8 | |
| Percentage change Aimean (mean±95% CI) | −24.6±4.2 | −24.2±7.4 | 0.6 |
| Absolute change Aimean (mm2) Median (IQR) | −2.23 (0.9–3.5) | −0.6 (0.1–1.4) | <0.001 |