Table 3.
Cox proportional hazards regression analysis of potential risk factors for 30-day mortality
| Variable | Without/with propensity score adjustmenta | ||
|---|---|---|---|
| HR | 95% CI | P value | |
| Age (> 65 years) | 2.038 | 1.263–3.286 | 0.004 |
| CRRT | 1.786 | 1.087–2.932 | 0.022 |
| Sepsis | 1.868 | 1.127–3.097 | 0.015 |
| Organ transplantation | 4.660 | 2.390–9.088 | < 0.001 |
| Sex (female) | 0.628 | 0.397–0.995 | 0.047 |
| Antimicrobial treatment duration (> 7 days) | 0.171 | 0.104–0.281 | < 0.001 |
| CAZ/AVI-based therapeutic regimens | 0.391 | 0.236–0.648 | < 0.001 |
HR hazard ratio, CI confidence interval
aThe propensity score that was included in the Cox-proportional hazards regression model showed no significant alteration to the results of other variables (P = 0.475)