Fig. 2. Gut microbiome of PD patients varies by dietary fiber intake.

a Principal coordinate analysis plot of the microbiome by dietary fiber intake tertile. b Box plot of microbial diversity by Shannon index by dietary fiber intake tertile. Taxonomic summary plot of relative abundance at c phylum and d genus level (≥1% relative abundance) by dietary fiber intake tertile. e Differential abundance of microbial taxa at genus level and f functional pathways from predicted metagenome by dietary fiber intake after adjusting for age, sex, race, and sequencing platform. Taxa and pathways in (e) and (f) are associated with categorical dietary fiber intake tertile at q-trend <0.05 and continuous dietary fiber intake at q-value < 0.05. Error bars represent 95% confidence intervals.