Figure 1. (A) Receiver operating characteristic (ROC) curve analysis for calcium/phosphorus with cutoff, sensitivity, specificity, AUC, standard error, and 95% confidence interval values. (B) ROC curve analysis for corrected calcium/phosphorus with cutoff, sensitivity, specificity, AUC, standard error, and 95% confidence interval values. CU: conventional units (calcium and phosphorus measured in mg/dL); AUC: area under the curve.
