Number of significant associations identified in the initial linear mixed-effects regression analysis. Specifically, for each covariate listed in this table, we performed linear mixed-effects regression analyses in which the response variables are microbial taxa abundance and the regressors are as follows: (1) gestational age at birth, (2) post-menstral age, (3) this covariate (main), and (4) the interation between the main covariate and PMA. Regression t tests were used to assess the statistical significance of associations. Benjamini-Hochberg multiple testing procedure was used to control false discovery rate at 0.05 level. Listed in this table are the numbers of taxa that are significantly associated with each regressors in these initial regression analyses. (DOCX 17Â kb
