Table 3. Univariate hazard ratios for risk factors for acquired colonization with AROs, according to Cox regression analysis.
| Variables | Nasal colonization (N = 123) | Rectal colonization (N = 199) | Endotracheal colonization (N = 80) | |||
|---|---|---|---|---|---|---|
| HR (95% CI) | p | HR (95% CI) | p | HR (95% CI) | p | |
| Admission for tetanus disease | 0.40 (0.27–0.60) | <0.001 | 0.37 (0.27–0.51) | <0.001 | 0.63 (0.35–1.13) | 0.12 |
| Charlson Comorbidity Index score | 1.25 (1.08–1.44) | 0.003 | 1.24 (1.12–1.37) | <0.001 | 1.45 (1.09–1.93) | 0.01 |
| Admission colonization status | ||||||
| Admission nasal colonization | 0.65 (0.37–1.12) | 0.12 | - | - | - | - |
| Admission rectal colonization | - | - | 1.12 (0.76–1.64) | 0.57 | - | - |
| Admission endotracheal colonization | - | - | - | - | 0.86 (0.47–1.57) | 0.63 |
| Receipt of antimicrobial treatment on admission | 1.96 (1.31–2.95) | 0.001 | 1.89 (1.38–2.59) | <0.001 | 1.44 (0.83–2.51) | 0.19 |
| Intensive care procedures on admission | ||||||
| Nasogastric tube | 1.14 (0.79–1.66) | 0.48 | 0.69 (0.51–0.92) | 0.01 | 0.83 (0.52–1.32) | 0.42 |
| Respiratory support | 1.34 (0.93–1.92) | 0.11 | - | - | 0.91 (0.58–1.43) | 0.69 |