Mathematical models of the colonic microbiota: an evaluation of accuracy using <i>in vitro</i> fecal fermentation data.

For this subset of samples, acetate exhibited a moderate agreement between predicted and measured z-scores ( r = 0.31, p = 0.005), butyrate demonstrated a trend toward a weak positive correlation ( r = 0.21, p = 0.06), and propionate showed a trend toward weak a negative correlation ( r = −0.19, p = 0.08; Figure 1 ).

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