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Classification matrix for the XGBoost and logistic regression models in the out-of-sample validation cohort
| XGBoost | Stepwise Logistic regression | |||
|---|---|---|---|---|
| Observed | Observed | |||
| Non-responsive | Responsive | Non-responsive | Responsive | |
| Predicted | ||||
| Non-responsive | 846 | 180 | 737 | 228 |
| Responsive | 177 | 467 | 286 | 419 |
Correct classification (accuracy) of volume responsiveness for the XGBoost and the logistic models were 0.79 (95% CI, 0.77–0.81) and 0.69 (95% CI, 0.67–0.71), respectively
