Statistics of last oximetry study prior to discontinuing oxygen
| SpO2% | 96 (95–97.5) |
| Minimum SpO2% | 93 |
| Drops of ≥4% per hour | 3.8 (2.2–5.3) |
| Percentage of total study time with SpO2 <90% | 0.56 (0.19–0.94) |
| SpO2 <90% | 2 min 29 s (1 min 14 s to 5 min 15 s) |
Data are presented as median (interquartile range), unless otherwise stated. SpO2: arterial oxygen saturation measured by pulse oximetry.