Outcome parameters in the usual care and virtual asthma clinic (VAC) groups at 16 months of follow-up
| Usual care | VAC | Difference (95% CI) | p-value# | |
| SFDs | 27.3±3.6 | 28.5±1.7 | 1.23 (0.42–2.04) | 0.003 |
| C-ACT score | 22.3±3.9 | 23.7±2.8 | 1.17 (0.09–2.25) | 0.03 |
| ACT score | 21.3±3.3 | 22.1±2.9 | 0.88 (−0.41–2.16) | 0.18 |
| FEV1 % pred | 92.3±14.7 | 92.1±13.5 | −1.01 (−3.60–1.57) | 0.44 |
| FEV1 z-score | −0.68±1.1 | 0.52±1.0 | −0.04 (−2.50–0.16) | 0.70 |
| FENO ppb | 30.3±24 | 33.5±31.5 | 4.19 (−2.51–10.88) | 0.22 |
Data presented as mean±sd, unless otherwise stated. SFD: symptom-free day; (C-)ACT: (Childhood) Asthma Control Test; FEV1: forced expiratory volume in 1 s; FENO: exhaled nitric oxide fraction. #: p-values derived from linear mixed model analysis.