Principal component analysis
fecal bile acid
To better interpret the association of defecation status, intestinal microbiota, and habitual diet with fecal BA composition, we performed a PCA on the six variables that showed significant differences among BA clusters (Association of defecation, diet, and intestinal microbiota with fecal bile acid composition in the community-dwelling young participant. Principal component analysis was performed on six variables that showed significant differences among clusters based on the fecal bile acid composition and generated two principal components (PC1 and PC2). The distributions of PC1 and PC2 of the participants were shown in Fig. 