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Receiver operating characteristic curves for the different combinations of anti-Saccharomyces cerevisiae antibody (ASCA) IgA with any one of the remaining 4 markers. Under the reference line, the area under the curve (AUC) =.5. AUC < .6, low diagnostic accuracy. ASCA = anti-Saccharomyces cerevisiae antibody, AUC = area under the curve.
