Table 2.
Patient Characteristics of CPAP treatment and subgroups. 1n (%); Median (IQR). 2Pearson's Chi-squared test; Wilcoxon rank sum test; Fisher's exact test. Abbreviations used: FiO2, fraction of inspired oxygen; RR, respiratory rate; SpO2, pulse oximetry; CFS, clinical frailty scale.
| Variable | Overall CPAP group N = 2331 |
CPAP Treatment sub-group |
p-value [2] | |
|---|---|---|---|---|
| CPAP, clinician discontinued N =116 [1] |
CPAP, patient discontinued N =117 [1] |
|||
| Death within 30 days | 179 (77%) | 83 (72%) | 96 (82%) | 0.058 |
| Time from inclusion to discharge (of survivors, days) | 16 (9, 22) | 16 (12, 23) | 13 (6, 18) | 0.12 |
| Palliative care accessed | 111 (49%) | 51 (44%) | 60 (53%) | 0.2 |
| Initial CPAP settings | ||||
| Pressure (cm H2O) | 10 (5, 10) | 10 (5, 10) | 10 (5, 10) | 0.5 |
| FiO2 | 50 (38, 53) | 53 (38, 53) | 49 (38, 53) | 0.8 |
| Maximum CPAP settings | ||||
| Pressure | 10 (10, 12) | 10 (10, 14.2) | 10 (10, 12) | 0.011 |
| FiO2 | 53 (46, 56) | 53 (48, 56) | 53 (46, 60) | 0.4 |
| Duration of CPAP use (days) | 3 (1, 5) | 3 (1, 7) | 2 (1, 4) | 0.014 |