Fig. 5

Receiver operating characteristic (ROC) curve analysis for the 28-day survival rate nomogram. AUC, area under the curve: The AUC of the ROC curve is 0.833, indicating a high discriminatory power of the model. An AUC of 1 represents perfect discrimination, while an AUC of 0.5 suggests no discriminative ability. Sensitivity and Specificity: The curve shows the trade-off between sensitivity and specificity. Sensitivity, or the true positive rate, is plotted on the y-axis, while specificity, or the true negative rate, is plotted on the x-axis. Model Performance: The model demonstrates a balance between sensitivity and specificity, with a notable sensitivity of 0.704 (95% CI: 0.714 to 0.850) at a given threshold.