Fig. 5From: Prediction of new onset postoperative atrial fibrillation using a simple NomogramCalibration curve of the model in the derivation (A) and validation (B) cohort. The Y-axis represents the actual POAF incidence rate, and the x-axis represents the predicted rate. The diagonal line represents a perfect prediction by the ideal model. The red line represents the performance of the nomogram, of which a closer fit to the diagonal line represents a better predictionBack to article page