Cox's proportional hazard model for mortality in patients with pneumonia
| Variables | Odds ratio | 95% CI | p |
| Male | 0.911 | 0.435-1.908 | 0.805 |
| Age≥ 65 | 1.956 | 0.559-6.851 | 0.294 |
| Polymicrobial pathogens | 0.421 | 0.054-3.255 | 0.407 |
| Polymicrobial pathogens | 1.029 | 0.375-2.826 | 0.956 |
| Use of Anti-pseudomonal agent | 1.597 | 0.669-3.816 | 0.292 |
| Use of Anti-MRSA* agent | 1.460 | 0.308-6.917 | 0.634 |
| CURB-65 score ≥ 3 | 1.926 | 0.933-3.973 | 0.076 |
| PSI class IV and V | 9.182 | 1.951-43.219 | 0.005 |
| HCAP | 0.906 | 0.377-2.179 | 0.826 |