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Nomogram combining HDL, Apo B, plaque volume, and Rad-score. (A) Nomogram plot. (B) Calibration graph for the training set. (C) Calibration graph for the validation set. HDL, high-density lipoprotein; ApoB, apolipoprotein B; PV, plaque volume; SS, SYNTAX scores. Result = 1: The SS was intermediate-high.
