Fig. 3

The specific microbiota at the genus and species level. (a) The specific bacterial microbiota at the genus level in the overall CHD patients. The random forest analysis was used. The MeanDecreaseAccuracy contained a measure of the extent to which a variable improves the accuracy of the forest in predicting the classification. Higher values mean that the variable improves prediction. (b) The specific bacterial microbiota at the species level. The R3.5.1 with indicspecies package was used. Permutation test was performed. The shape of the graph represents the comparison in enrichment (circle) or depletion (triangle) between three groups. The size of the graph indicates the relative abundance. *p < 0.05; .p < 0.1. 71 samples were used in each analysis