| Results of investigations | Stage 2: Median (range) | Stage 3: Median (range) | ||
| Good response | Poor/no response | Good response | Poor/no response | |
| FeNO50 (ppb) | 56 (29–132) | 87 (45–117) | 17 (6–62) | 53 (19–108) |
| FEV1 pre BD (%) | 60 (46–90) | 66 (36–109) | 67 (46–99) | 74 (67–111) |
| Sputum eos (%) | 22.6 (3.2–41.6) | 21.7 (5.2–67) | 0.25 (0–1) | 10.6 (0.25–36) |