Figure 2.

Receiver operating characteristic (ROC) curves of anti-Saccharomyces cerevisiae antibody (ASCA) IgA and IgG, anti-laminaribioside^^ carbohydrate antibody (ALCA), anti-mannobioside carbohydrate antibody (AMCA), anti-chitobioside carbohydrate antibody (ACCA), antibody against outer membrane porin C (anti-OmpC), antibody against the Pseudomonas fluorescens bacterial sequence I₂ (anti-I₂) for discriminating Crohn's disease and the control. Under the reference line, the area under the curve (AUC) =0.5. AUC < .6, low diagnostic accuracy. ACCA = anti-chitobioside carbohydrate antibody, anti-C = anti-chitin, ALCA = anti-laminaribioside carbohydrate antibody, AMCA = anti-mannobioside carbohydrate antibody, ASCA = anti-Saccharomyces cerevisiae antibody, ROC = receiver operating characteristic.