Number of loops and ratio of time to peak tidal expiratory flow (tPTEF) to expiratory time (tE), respiratory rate, tidal volume per kilogram (VT·kg−1) and expiratory volume (VE) per rater for infants where data from tests were saved by all three raters, all infants where data were saved by one rater and data selected by the software
| Infants | Number of loops | tPTEF/tE | Respiratory rate (breaths·min−1) | VT·kg−1 | VE (mL) | |
| All raters | ||||||
| Rater 1 | 52 | 25 (3–53) | 0.39±0.08 | 67±13.4 | 6.4±2.1 | 39.1±12.2 |
| Rater 2 | 52 | 26 (3–67) | 0.41±0.08 | 66±13.1 | 6.7±2.1 | 40.2±12.2 |
| Rater 3 | 52 | 15 (2–52) | 0.39±0.09 | 65±13.6 | 6.9±2.1 | 41.5±12.0 |
| Data saved by one rater | ||||||
| Rater 1 | 54 | 23 (3–53) | 0.39±0.08 | 67±13.3 | 6.3±2.2 | 38.4±12.5 |
| Rater 2 | 56 | 25 (1–67) | 0.43±0.11 | 66±13.0 | 6.4±2.2 | 38.9±12.9 |
| Rater 3 | 52 | 15 (2–52) | 0.39±0.09 | 65±13.6 | 6.9±2.1 | 41.5±12.0 |
| Spiroware | 56 | 8 (1–44) | 0.52±0.22 | 64±14.4 | 5.4±2.0 | 29.3±10.2 |
Data are presented as n, median (range) or mean±sd.