Fig. 5

A, B Calibration curves of the prediction nomogram in the training cohort (A) and validation cohort (B). The X-axis represents the probability predicted by the nomogram and the Y-axis represents the actual probability of LNM in invasive lung adenocarcinoma within 2 cm. The black dashed line represents the ideal curve, the blue solid line represents the apparent curve (uncorrected), and the red solid line represents the deviation curve corrected by bootstrap method (B = 1000 times). LNM, lymph node metastasis