Table 1. Data by groups.
| H | C (no ICS) | C (with ICS) | W (no ICS) | W (with ICS) | |
| Number (F/M) | 35 (22/13) | 61 (23/38) | 24 (8/16) | 67 (22/45) | 55 (21/34) |
| Mean FENO (ppb) | 10.6 | 12.4 | 9.8 | 21.7 | 19.2 |
| FENO range (ppb) | 2.5-23 | 2.5-76 | 2.5-26 | 2.5-146 | 2.5-90 |
| Abnormal FENO (%) | 5.7 | 18.0 | 8.3 | 32.8 | 27.3 |