Patient factors and 30-day mortality
| Overall, n=70 | Alive at 30 days, n=21 | Dead at 30 days, n=49 | p valuea | |
|---|---|---|---|---|
| Female | 24 (34.3%) | 8 (38.1%) | 16 (32.7%) | 0.79 |
| Rockwood clinical frailty score 4 | 42 (60%) | 12 (57.1%) | 30 (61.2%) | 0.79 |
| Age, years | 76 (69–80) | 71 (66–80) | 77 (69–82) | 0.20 |
| Pre-CPAP C-reactive protein | 162 (101–220) | 170 (90–279) | 162 (109–199) | 0.74 |
| Pre-CPAP white blood cell count, × 109/Lb | 8.2 (5.0–12.7) | 8.2 (6.0–9.6) | 8.4 (4.4–12.9) | 0.92 |
| Pre-CPAP lymphocytes, × 109/Lb | 0.6 (0.4–1.0) | 0.6 (0.4–1.0) | 0.6 (0.4–1.0) | 0.89 |
| Pre-CPAP fraction of inspired oxygen, % | 60 (40–80) | 58 (40–60) | 60 (50–80) | 0.16 |
Binomial/ordinal factors are presented as number (%) and continuous factors as median (IQR).
↵a p values calculated with Fisher's exact test for binomial/ordinal factors, and using the Wilcoxon rank-sum test for continuous factors
↵b excluding 1 patient with acute lymphocytic leukaemia with a lymphocyte count of 139.