Correlation of GI symptoms with CPAP/NIV, ICU admission or death
| GI symptoms | Non-GI symptoms | P value | |
| CPAP/NIV, n (%) | 9 (21.4) | 103 (27.9) | 0.37 |
| ICU, n (%) | 1 (2.4) | 27 (7.3) | 0.23 |
| Death, n (%) | 4 (9.5) | 68 (18.4) | 0.15 |
CPAP, continuous positive airway pressure; ICU, intensive care unit; NIV, non-invasive ventilation.