Table 6.
Multivariate Cox proportional hazards model for 28-day and 6-month survival for patients admitted to the ICU with CAP
| Increment | Hazard | 95% CI | P- value | |
|---|---|---|---|---|
|
28-day mortality |
|
|
|
|
| APACHE II score |
|
1.06 |
1.03, 1.09 |
4.23E-05 |
| Mechanical ventilation |
|
2.29 |
1.11, 4.72 |
2.56E-02 |
| Haematocrit |
1% |
0.97 |
0.95, 0.99 |
6.61E-03 |
| pH value |
0.1 unit |
0.83 |
0.73, 0.95 |
7.52E-03 |
|
6-month mortality |
|
|
|
|
| APACHE II score |
|
1.04 |
1.02, 1.06 |
5.67E-05 |
| Mechanical ventilation |
|
2.68 |
1.49, 4.85 |
1.06E-03 |
| Urine volume day 1 |
100 mL/day |
0.98 |
0.96, 0.99 |
1.28E-04 |
| Lowest heart rate day 1 |
|
1.01 |
1.0, 1.01 |
4.60E-02 |
| Haematocrit |
% |
0.97 |
0.95, 0.99 |
4.78E-04 |
| Diffuse bilateral CXR | 1.38 | 1.07, 1.78 | 1.32E-02 |
Final model is selected using a stepwise regression by Akaike-information-criteria. Results are adjusted for sex. Age correction included in APACHE II score. APACHE, acute physiology and chronic health evaluation; CXR, chest radiography.