Fig. 4

A comparison of defecation frequency and ROC curve analysis. a A comparison of defecation frequency at the start of MMX treatment. b ROC curve analysis of defecation frequency and insoluble excretion. ROC analysis in which the defecation frequency at the start of treatment was employed as the test variable indicted that a defecation frequency of ≥ 3.5 times a day exhibited sensitivity and specificity of 66.7% and 65.5%, respectively, for predicting insoluble MMX excretion