Table 2.
Respiratory variables, ICU stay, and hospital mortality. Data are presented as mean (standard deviation), median (quartiles), or number (%).
| Characteristics | All patients (N = 72) | Oxygen therapy group (N = 22) | MV group (N = 50) | P-value |
|---|---|---|---|---|
| SpO2 on room air (%) | 80(70–85) | 88(85–89) | 75(65–82) * | <0.0001 |
| RR on room air (breaths/min) | 39(30–45) | 35(30–40) | 40(33–45) * | 0.025 |
| ROX index | 2(1.6–2.6) | 2.5(2.2–3) | 1.8(1.4–2.6)* | <0.0001 |
| CT score | 14(10–19) | 10(8–12) | 18(13–20) * | <0.0001 |
| Outcome variable | ||||
| ICU stay (days) | 6(3–8) | 3(2–4) | 7(4–8) * | <0.0001 |
| Mortality (%) | 17(23%) | 0 | 16(34%)* | 0.002 |
CT: Computed tomography, ICU: intensive care unit, MV: mechanical ventilation, ROX: respiratory rate‑oxygenation, RR: respiratory rate, SpO2: peripheral oxygen saturation, * denotes significance compared to the other group, P < 0.05.