Table 3.
Cox and Fine–Gray regression models to evaluate risk of type of endotracheal tubes on ventilator-associated pneumonia suspicion and confirmation
| Variable | Cox model | Fine–Gray model | |||
|---|---|---|---|---|---|
| HR (95% CI) | p value | HR (95% CI) | p value | ||
| VAP suspicion | |||||
| Type of ETTs | Coated | 0.47 (0.27–0.81) | 0.007 | 0.53 (0.31–0.90) | 0.02 |
| Antibiotic on intubation | No | 3.16 (1.83–5.48) | < 0.0001 | 3.11 (1.81–5.32) | < 0.0001 |
| Occurrence of VAP | |||||
| Type of ETTs | Coated | 0.41 (0.19–0.88) | 0.02 | 0.47 (0.23–0.99) | 0.049 |
| Antibiotic on intubation | No | 3.49 (1.66–7.36) | 0.001 | 3.23 (1.60–6.55) | 0.001 |
CI confidence interval; ETT endotracheal tube; HR hazard ratio; VAP ventilator-associated pneumonia