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| Variables | n = 307 | % |
|---|---|---|
| Age (years) | 56 ± 15 | |
| Gender (female/male) | 109 (35.5%) / 198 (64.5%) | |
| Diabetes mellitus | 95 | 30.9% |
| Hypertension | 127 | 41.4% |
| Chronic pulmonary obstructive disease | 6 | 2.0% |
| Chronic kidney disease | 15 | 4.9% |
| Heart failure | 16 | 5.2% |
| Smoking | 52 | 16.9% |
| Respiratory support | ||
| Simple mask | 54 | 17.6% |
| Reservoir mask | 109 | 35.4% |
| High-flow nasal cannula | 10 | 3.3% |
| Non-invasive ventilation | 26 | 8.5% |
| Invasive ventilation | 108 | 35.2% |
