Fig. 3From: Establishing an appropriate Z score regression equation for Chinese pediatric coronary artery echocardiography: a multicenter prospective cohort studyA1 ~ A3: D method Z score scatter plots for LCA, LAD, and RCA with 2Z score boundaries. B1 ~ B3: studentized residual diagrams for LCA, LAD, and RCA. The black line is the predicted value, and the red line is the prediction interval with 95% confidenceBack to article page