Table 3: Longitudinal evaluation data of the fraction of exhaled nitric oxide of the control tests of asthma and lung function and symptoms reported in the consultations.
| Basal | 2 Visit | 3 Visit | |
| FeNO (n) | |||
| Low
< 12 years (< 20 ppb) ≥ 12 years (< 25 ppb) |
9 | 12 | 16 |
| Intermediate
< 12 years (20 - 35 ppb) ≥ 12 years (25 - 50 ppb) |
7 | 6 | 2 |
| High
< 12 years (> 35 ppb) ≥ 12 years (> 50 ppb) |
6 | 4 | 4 |
| TCA (n) | |||
| Uncontrolled | 11 | 5 | 7 |
| Poorly controlled | 10 | 17 | 14 |
| Controlled | 1 | 0 | 1 |
| FEV1 % | 76.41 ± 15.15 (38.1 - 97.2) |
76.49 ± 16.68 (34.9 - 104.5) |
79.95 ± 13.60 (50.5 - 102.6) |
| FEV1/FVC % | 84.96 ± 13.61 (52.5 - 100.0) |
92.42 ± 10.50 (70.2 - 102.1) |
93.55 ± 6.47 (77.2 - 100.0) |
| Symptoms (n) | |||
| Cough day night | 10/13 | 10/10 | 8/8 |
| Wheezing | 7 | 6 | 4 |
| Tiredness | 7 | 5 | 5 |
| Chest pain | 4 | 1 | 3 |
FeNO: Fractional of exhaled nitric oxide; ACT: Asthma control test; FEV1 %: Forced expiratory volume in 1 second of the forced vital capacity (FVC) and FEV1/FVC. Data are expressed as mean ± SD (minimum and maximum) for FEV1 and FEV1/FVC.