Table 5.
Survival time analysis until day 150 after inclusion (independent risk factors)
| Hazard ratio (95% confidence interval) | P value | |
| Age (per year)a | 3.213 (1.823–5.665) | < 0.001 |
| Maximum APACHE II score (per point)b | 15.311 (5.860–40.005) | < 0.001 |
| Number of surgical revisions (per revision)c | 1.381 (1.154–1.652) | < 0.001 |
| Time-dependent covariate for number of surgical revisions | 1.689 (1.189–2.400) | 0.003 |
| Maximum number of failing organs (per organ)c | 1.664 (1.260–2.198) | < 0.001 |
| Pneumonia | 2.263 (1.225–4.180) | 0.009 |
| Time-dependent covariate for pneumonia | 1.480 (1.121–1.954) | 0.006 |
| Surgery for thoracic diseases | 1.975 (1.335–2.921) | 0.001 |
| Peritonitis | 1.789 (1.278–2.504) | 0.001 |
aAfter power transformation. bAfter logarithmic transformation.cAfter quadratic transformation. APACHE, Acute Physiology and Chronic Health Evaluation.