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Patient clinical characteristics (n = 31).
| Variables | n | % | |
| Gender | Male | 30 | 97.0 |
| Female | 1 | 3.0 | |
| Previous tracheostomy | Yes | 17 | 55.0 |
| No | 14 | 45.0 | |
| Nutritional status | Eutrophic | 8 | 25.0 |
| Mild malnutrition | 6 | 19.0 | |
| Moderate malnutrition | 1 | 3.0 | |
| Not informed | 22 | 31.0 | |
