Table 2.
Multivariate analyses for ventilator-associated pneumonia (VAP) and surgical site infection (SSI).
| Characteristic | SSI | VAP | ||
|---|---|---|---|---|
| Hazard ratio (95% CI) | P value | Hazard ratio (95% CI) | P value | |
| Age (yrs) | 0.005 | |||
| <60 | Reference | |||
| ≥60 | 3.63 (1.46-9.00) | |||
| Sex | 0.61 | |||
| Male | Reference | |||
| Female | 1.25 (0.53-2.92) | |||
| Charlson comorbidity index | 0.003 | <0.001 | ||
| 0-1 | Reference | Reference | ||
| ≥2 | 3.18 (1.47-6.91) | 6.93 (3.06-15.69) | ||
| Smoking | 0.008 | |||
| No | Reference | |||
| Yes | 2.20 (1.23-3.91) | |||
| Type of tracheostomy | 0.01 | |||
| Surgical | Reference | |||
| Percutaneous | 0.33 (0.14-0.79) | |||
| Cluster nursing | <0.001 | 0.01 | ||
| No | Reference | Reference | ||
| Yes | 0.13 (0.04-0.36) | 0.42 (0.22-0.81) | ||