Fig. 2: GM sample diversity and composition comparisons with Social Disadvantage (SD) and Psychosocial Stressors (PS) scores, using two-sided T-distribution correlation tests (no adjustment for multiple comparisons).

a SD scores and PD scores do not significantly correlate with GM α-diversity (Faith phylogenetic diversity) in the 121 GM samples from the mothers (two-sided T-statistic correlation test). b α-diversity in the children is significantly positively correlated with SD and PS scores. Relative proportions of human milk feeding are shown, to provide additional context for potential sources of differential diversity. c β-diversity, measured by weighted UniFrac distance between the GM of each mother-child dyad, is positively correlated with SD and PS scores.