Participant characteristics stratified by test period
| Variables | MasterScreen-HypAir | HypAir-MasterScreen | Overall |
| Participants, n (%) | 22 (63) | 13 (37) | 35 (100) |
| Sex, n (%) | |||
| Male | 11 (50) | 6 (46) | 17 (49) |
| Female | 11 (50) | 7 (54) | 18 (51) |
| Age years | 40.8±2.9 | 38.8±5.2 | 40.0±15.5 |
| Height cm | 175.5±2.5 | 172.8±2.7 | 174.5±10.1 |
| Weight kg | 73.2±11.3 | 63.5±12.1 | 69.6 ±12.4 |
| BMI kg·m−2 | 23.7±2.7 | 21.1±2.2 | 22.7±2.8 |
| Heart rate beats·min−1 | 71.6±11.2 | 68.5±10.9 | 70.5±11.0 |
| SpO2 % | 97.7±0.9 | 97.3±1.2 | 97.5±1.0 |
| FEV1 MasterScreen z-score | −0.01±0.91 | −0.38±0.63 | −0.15±0.82 |
| FVC MasterScreen z-score | 0.55±0.92 | −0.02±0.61 | 0.34±0.85 |
| FEV1 HypAir z-score | 0.20±0.92 | −0.22±0.70 | 0.04±0.86 |
| FVC HypAir z-score | 0.64±0.87 | 0.11±0.59 | 0.44±0.81 |
Data are presented as mean±sd, unless otherwise stated. BMI: body mass index; SpO2: oxygen saturation measured by pulse oximetry; FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity.