Table 3.
Univariate analysis of binary risk factors for aspiration
| Parameter | Manifestation | Patients without aspiration (%) (n) | Patients with aspiration (%) (n) | Evaluable patients (n) | P value |
| Gender | Male | 93.5 (275) | 6.5 (19) | 294 | 0.048 |
| Female | 98.3 (115) | 1.7 (2) | 117 | ||
| Vomiting | No | 96.4 (317) | 3.7 (12) | 329 | 0.017 |
| Yes | 89.9 (71) | 10.1 (8) | 79 | ||
| Oxygen supply | No | 99.2 (262) | 0.8 (3) | 265 | <0.0001 |
| Yes | 86.9 (126) | 13.1 (19) | 145 | ||
| Guedel tube application | No | 95.5 (382) | 4.5 (18) | 400 | 0.0003 |
| Yes | 70.0 (7) | 30.0 (3) | 10 | ||
| Mask ventilation | No | 95.8 (383) | 4.2 (17) | 400 | <0.0001 |
| Yes | 60.0 (6) | 40.0 (4) | 10 | ||
| Protective airway reflexes (at GCS score ≤8) | No | 54.6 (12) | 45.4 (10) | 22 | 0.0001 |
| Yes | 94.2 (49) | 5.8 (3) | 52 | ||
| Secretion suction | No | 96.5 (382) | 3.5 (14) | 396 | <0.0001 |
| Yes | 46.1 (6) | 53.9 (7) | 13 | ||
| Intubation | No | 98.4 (377) | 1.6 (7) | 384 | <0.0001 |
| Yes | 44.4 (12) | 55.6 (15) | 27 |
GCS, Glasgow Coma Scale.