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Receiver operating characteristic curves for the different combinations of anti-Saccharomyces cerevisiae antibody (ASCA) IgA with any 3 of the remaining 4 markers. Under the reference line, the area under the curve (AUC) =0.5. AUC < 0.6, low diagnostic accuracy. ASCA = anti-Saccharomyces cerevisiae antibody, AUC = area under the curve.
