Development and validation of a nomogram model for identifying post-stroke anxiety symptoms

Figure 4 Calibration curve evaluating the consistency between predicted and observed post-stroke anxiety symptoms probabilities. The dashed diagonal line denotes the ideal reference line, indicating perfect concordance between predicted and observed probabilities. In contrast, the solid line illustrates the bias-corrected calibration curve, which is obtained through bootstrap resampling with 1000 iterations. A closer alignment with the dashed line signifies superior calibration. A: Training set; B: Validation set.