Overall survival model for patients undergoing elective transjugular intrahepatic portosystemic shunt (TIPS). Stepwise Cox model to assess independent predictors of death after TIPS implantation (n=234, death=94) and validation of the variables yielded by this stepwise Cox model in a non-stepwise analysis to reduce the number of missing cases (n=304, death=133)
| Stepwise Cox model (n=234) | Validation (n=304) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Variable | Step | Hazard ratio | 95% CI | p Value | Hazard ratio | 95% CI | p Value | ||
| Creatinine | 1 | 2.238 | 1.564 | 3.464 | <0.001 | 1.728 | 1.217 | 2.453 | 0.002 |
| Bilirubin | 2 | 1.538 | 1.199 | 1.973 | 0.001 | 1.351 | 1.084 | 1.684 | 0.007 |
| Age | 3 | 1.023 | 1.004 | 1.042 | 0.016 | 1.025 | 1.008 | 1.042 | 0.003 |
| Refractory ascites | 4 | 1.608 | 1.096 | 2.576 | 0.017 | 1.514 | 1.067 | 2.147 | 0.02 |