|
| Tracheal intubation | Tracheotomy | ||||
| 0˚ | 20˚ | 40˚ | 60˚ | 90˚ | 90˚ | |
| Ventilation* | 1.00 | 1.00 | 0.61 | 0.77 | 0.79 | 0.22 |
| Control method† | 1.00 | 1.00 | 0.68 | 1.00 | 0.54 | 0.39 |
| Catheter‡ | 1.00 | 1.00 | 0.21 | 0.040 | <0.001 | <0.001 |
| PEEP§ | 1.00 | 1.00 | 1.00 | 0.063 | 0.59 | 0.058 |