Fig. 4: Receiver operator characteristic (ROC) curves for digital TILs and manual sTILs.

a easTILs% and b sTILs%. AUC area under the ROC curve, easTILs% = [sum of lymphocytes area/stromal area] × 100, sTILs% pathologist assessment of stromal TILs, TILs tumor-infiltrating lymphocytes. Statistical analysis was performed using the DeLong test.