Fig. 5From: Antimicrobial treatment improves tryptophan metabolism and mood of patients with small intestinal bacterial overgrowthThe Hamilton Anxiety Rating Scale (HAM-A) A, and the Hamilton Depression Rating Scale (HAM-D) B in patients with small intestinal bacterial overgrowth with diarrhea predominant (SIBO-D) and with constipation predominant (SIBO-C) before (blue) and after rifaximin treatment (red); bars represent mean, error bars represent standard deviation. Differences in both groups before and after treatment were examined by Wilcoxon signed-rank test; n = 40 in both groups; *** p < 0.001Back to article page