TABLE 5.
Multivariable analysis of factors associated with 90-day mortality
| Variable | Univariate |
Multivariable |
||
|---|---|---|---|---|
| HR (95% CI) | P value | Adjusted HR (95% CI) | P value | |
| Age group (years) | ||||
| 65–74 | Reference | – | Reference | – |
| 75–84 | 2.76 (0.17–44.26) | 0.474 | 2.18 (0.09–49.19) | 0.623 |
| 85+ | 29.74 (2.65–334.1) | 0.006 | 29.67 (1.42–617.6) | 0.029 |
| BMI (kg/m2) | 1.11 (1.01–1.22) | 0.036 | 1.166 (1.03–1.32) | 0.017 |
| ECOG group | ||||
| 0 | Reference | – | ||
| 1–2 | 5.92 (0.53–65.55) | 0.147 | ||
| 3–4 | 103.57 (5.87–1826.7) | 0.002 | ||
| 5 or more preoperative comorbidities | ||||
| No | Reference | – | Reference | – |
| Yes | 4.43 (0.62–31.68) | 0.138 | 1.47 (0.15–14.22) | 0.738 |
| Procedure | ||||
| Minor | Reference | – | Reference | – |
| Major | 0.46 (0.05–4.45) | 0.503 | 0.17 (0.01–3.23) | 0.239 |
| Length of surgery (min) | 1 (0.99–1.01) | 0.608 | 1 (0.98–1.02) | 0.924 |
| Major complication | ||||
| No | Reference | – | Reference | – |
| Yes | 45.57 (6.12–339.1) | <0.001 | 27.88 (1.88–414.11) | 0.016 |
All variables were tested for multicollinearity. Clinically significant variables and variables with P < 0.2 on univariate analysis were included in the multivariable analysis