Table 2.
Cox regression with mortality at longest follow-up showing adjusted hazard ratios and confidence intervals for the 12 variables entered in the model.
| aHR | 95% CI | p-value | ||
|---|---|---|---|---|
| Age | 1.06 | 1.05 | 1.06 | <0.001 |
| Male gender | 1.45 | 1.36 | 1.55 | <0.001 |
| ASA-PS-class 1 & 2 | Reference | |||
| ASA-PS 3 | 2.12 | 1.96 | 2.29 | <0.001 |
| ASA-PS 4 | 4.79 | 4.30 | 5.33 | <0.001 |
| ASA-PS 5 | 12.57 | 6.91 | 22.85 | <0.001 |
| University hospital | 0.83 | 0.76 | 0.91 | <0.001 |
| Time of surgery | ||||
| Day | Reference | |||
| Evening | 1.03 | 0.93 | 1.13 | 0.596 |
| Night | 1.17 | 0.83 | 1.67 | 0.368 |
| Weekend | 1.03 | 0.96 | 1.10 | 0.455 |
| Type of surgery | ||||
| Osteosynthesis: cerclage, spikes, pins | Reference | |||
| Osteosynthesis: intramedullary nail | 0.97 | 0.88 | 1.08 | 0.596 |
| Osteosynthesis: screw and plate | 1.05 | 0.95 | 1.17 | 0.360 |
| Hip replacement: cemented | 0.96 | 0.86 | 1.07 | 0.485 |
| Hip replacement: non-cemented | 0.64 | 0.37 | 1.11 | 0.114 |
| Compliance to surgical urgency planning | 1.00 | 0.86 | 1.17 | 0.971 |
| Surgical waiting time | ||||
| <12 h | Reference | |||
| 12 h–23 h59 min | 1.05 | 0.97 | 1.13 | 0.195 |
| >24 h | 1.12 | 0.96 | 1.32 | 0.157 |
| Time in theatre | 0.96 | 0.91 | 1.02 | 0.214 |
| Type of anaesthesia | 1.08 | 0.99 | 1.18 | 0.084 |
| PACU-LOS | 1.01 | 1.00 | 1.02 | <0.001 |
| ICU-admission | 1.05 | 0.85 | 1.31 | 0.639 |
Each variable was considered as an individual exposure and adjusted for the other 11 variables within the same model.