Table 3.
Cox proportional hazard regression analysis examining independent risk factors for 1-yr mortality after surgery in geriatric patients after hip fracture repair surgery
| Analysis of maximum likelihood estimates | ||||
|---|---|---|---|---|
| Parameter | Hazard ratio | 95% hazard ratio confidence limits | P-value | |
| Age at baseline, per year order | 1.000 | 0.949 | 1.054 | 0.996 |
| Mini-mental state examination at baseline, per point higher | 1.059 | 0.920 | 1.218 | 0.424 |
| Lighter vs heavier sedation | 1.393 | 0.641 | 3.027 | 0.402 |
| BMI at baseline, per kg m−2 higher | 0.914 | 0.838 | 0.998 | 0.044 |
| Charlson comorbidity index score, per point higher | 1.234 | 1.021 | 1.491 | 0.030 |
| Instrumental activities of daily living at baseline, per point higher | 0.741 | 0.600 | 0.914 | 0.005 |
| Postoperative delirium in hospital, yes vs no | 0.341 | 0.110 | 1.052 | 0.061 |
| Mean delirium rating scale severity score in hospital, per point higher | 1.203 | 1.025 | 1.412 | 0.024 |