High levels of free glycogen are associated with a vaginal microbiota dominated by <i>Lactobacillus</i> species and a low vaginal pH.

<p>The final analytic sample consisted of 177 observations with non-missing values for both glycogen and <i>Lactobacillus</i>. Free glycogen was analyzed as a binary variable dichotomized about the median and categorically using cutpoints according quartiles of the distribution, as indicated. The distribution of <i>Lactobacillus</i> relative abundance (A) and vaginal pH (B) are summarized by glycogen as a continuous variable by glycogen quartiles. *p-value is estimated by extension of the Kruskal-Wallis test with adjustment for clustering among repeated measurements.