Table 7. Multivariate hazard ratios for risk factors of hospital-acquired infections, according to Cox regression analysis.
| Variables | Pneumonia (N = 44) | Urinary tract infection (N = 38) | ||
|---|---|---|---|---|
| HR (95% CI) | p | HR (95% CI) | p | |
| Admission for tetanus disease | 0.33 (0.16–0.67) | 0.002 | 1.25 (0.41–4.88) | 0.72 |
| Charlson Comorbidity Index score | 1.04 (0.71–1.53) | 0.84 | 0.93 (0.39–1.47) | 0.82 |
| Prior colonization status | ||||
| Prior nasal colonization | 0.47 (0.16–1.37) | 0.17 | - | - |
| Prior rectal colonization | - | - | 0.50 (0.06–64.94) | 0.67 |
| Prior endotracheal colonization | 0.84 (0.37–1.90) | 0.69 | - | - |
| Intensive care procedures on admission | ||||
| Urinary catheter | - | - | 0.85 (0.41–1.68) | 0.64 |
| Respiratory support | 1.28 (0.65–2.55) | 0.48 | - | - |
| Vascular catheters | - | - | - | - |