Receiver operating curve (ROC) curve for PTH, PO4 and serum albumin versus HCH. The center diamond line represents the true positive fraction(TPF) for HCH in patients with a calculated sum for the linear predictor defined as the linear combination for PTH, PO4 and albumin. The upper and lower gray lines represent the 95% confidence levels. The Y axis = True Positive Fraction (i.e. Sensitivity) versus the X axis for False Positive Fraction (i.e. 1-specificity).
Bessette and Carter BMC Nephrology 2011 12:65 doi:10.1186/1471-2369-12-65