Fig. 4

The correlation between microbial protein fermentation and the severity of psychiatric symptoms. A The correlations between the relative abundance of amino acids catabolizing enzymes and the clinical score of total score of psychiatric symptoms (T), score of general symptoms (G), negative symptoms (N), and positive symptoms (P). B The correlation between the fecal concentrations of amino acids and their derivatives and each of the clinical scores of psychiatric symptoms. The color bar indicates the rho value of Spearman’s rank correlation coefficient; red, positive correlation; blue, negative correlation. C The correlation of daily protein intake with the clinical scores of psychiatric symptoms. R Pearson correlation coefficient