Intermittent hypoxia is involved in gut microbial dysbiosis in type 2 diabetes mellitus and obstructive sleep apnea-hypopnea syndrome

Figure 4 Average compositions and relative abundance of the bacterial community among three groups at different levels. A: Average relative abundance histogram of dominant species composition stratified by group at the phylum levels; B: Average relative abundance histogram of dominant species composition stratified by group at the genus levels; C: Histograms for genera with significant differences. Bar chart showing the mean ± SE of each group; D: Linear discriminant analysis analysis column diagram. LDA: Linear discriminant analysis. ^aP < 0.05. Significant difference shown by the Kruskal–Wallis rank-sum test.