Fig. 7. PiCRUSt-based examination of the tongue coating microbiota of the elderly SZ patients and the healthy controls.

The different bacterial functions were evaluated between the two groups based on two-sided Welch’s t-test. The comparisons between the groups for each KEGG functional category at level 2 (A) and level 3 (B) are shown by percentage. The Benjamini–Hochberg method was used for multiple testing correction based on the false discovery rate (FDR) through STAMP.