Volatility is associated with greater changes in PSS scores in dietary intervention group.
REGRESSION
Lower volatility (more stable microbiota) correlated with greater changes in PSS score. PSS score changes were calculated as absolute number changes between pre- and post-intervention. More negative numbers correspond to greater changes.Surprisingly, volatility was not linked to dietary intake, suggesting that the diet did not impact microbial stability. Other outcome measures were not statistically significant in regression analysis after accounting for multiple comparisons. Similarly, microbial taxa or function did not statistically significantly correlate with adherence score.