Characteristics of monitoring periods
| N (%) | Postmenstrual ages (SD) week | |
|---|---|---|
| Overall | 1019 (100%) | 31.6 (3.4) |
| Nurse:patient ratio | ||
| 1:1 | 61 (6%) | 26.9 (1.8) |
| 1:2 | 489 (48%) | 30.8 (3.1) |
| 1:3+ | 469 (46%) | 33.0 (3.2) |
| Illness severity category | ||
| High | 55 (5.4%) | 26.9 (1.7) |
| Medium | 791 (78%) | 31.0 (2.8) |
| Convalescent | 173 (17%) | 36.0 (2.2) |
| Respiratory support mode | ||
| High-frequency oscillator ventilation | 80 (8%) | 27.1 (1.6) |
| Synchronised intermittent mandatory ventilation | 143 (14%) | 28.2 (1.7) |
| Continuous positive airway pressure | 398 (39%) | 30.4 (1.9) |
| Nasal cannula | 399 (39%) | 34.9 (2.2) |
| Fio2 (setting on the bedside oxygen blender) | ||
| Low (Fio2 0.22–0.49) | 980 (96%) | 31.4 (3.2) |
| High (Fio2 ≥ 0.5) | 39 (4%) | 36.9 (5.0) |
Fio2, fraction of inspired oxygen.