Table 4. Clinical outcomes.
| Parameters | HFNC only group (n=45) | MV with prior HFNC (n=7) | MV only group (n=9) | P value† |
|---|---|---|---|---|
| Hospital mortality, n (%) | 24 (53.3) | 7 (100.0) | 5 (55.6) | 0.064 |
| Deaths in ICU, n (%) | 3 (6.7) | 7 (100.0) | 5 (55.6) | <0.001 |
| Length of hospital stay, days | 13 (7–18) | 19 (11–38.5) | 24 (12–31) | 0.134 |
| Length of ICU stay, days | 0 (0–0)‡ | 14 (8–24.5) | 7 (6–15) | <0.001 |
| DNR consent, n (%) | 30 (66.7) | 3 (42.9) | 4 (44.4) | 0.272 |
| Death without DNR consent, n (%) | 0 (0.0) | 4 (57.1) | 1 (11.1) | 0.001 |
| Time to death after DNR consent, days | 1 (0–4) | 0 (0–1) | 0 (0–1) | 0.563 |
HFNC, high flow nasal cannula; MV, mechanical ventilation; DNR, do-not-resuscitate. †P value <0.05 among HFNC group, MV with prior HFNC, and MV only group. ‡Only three died in ICU and the lengths of ICU stay were 1, 3 and 3 days, respectively.