Table 3. List of the major taxa and bifidobacterial species enriched (p < 0.05) in each time point and metadata group.

Major Taxon	Country Comparison			Birth Method Comparison			Day 7 vs. Day 30			Day 7 vs. Day 90			Day 30 vs. Day 90
	Country	Adjusted p value	β coefficient	Birth Method	Adjusted p value	β coefficient	Day	Adjusted p value	β coefficient	Day	Adjusted p value	β coefficient	Day	Adjusted p value	β coefficient
g_Bifidobacterium
s_breve							Day 7	0.046	−2.60	Day 90	0.004	3.27
s_longum subsp. longum	Georgia	0.012	−2.27
s_pseudocatenulatum	Georgia	0.0004	−3.33	Vaginal	0.031	3.38
s_bifidum
s_other							Day 7	0.046	2.12
s_adolescentis
s_bifidum/ pseudocatenulatum
s_longum subsp. infantis										Day 90	0.039	1.60
s_animalis
f_Enterobacteriaceae;g_	Georgia	1.95E-06	−2.44	Vaginal	0.012	2.10
g_Streptococcus	Georgia	0.0001	−1.59	Vaginal	0.008	1.73
g_Enterococcus	Georgia	0.022	−1.37				Day 7	0.021	2.02
g_Lactobacillus							Day 7	5.31E-05	−2.78	Day 90	9.29E-05	2.50
g_Bacteroides	Georgia	0.042	−1.21
f_Planococcaceae;g_	Georgia	7.04E-11	−2.74	Vaginal	0.0007	2.29				Day 90	4.86E-05	−2.43	Day 90	0.002	−1.78
g_Staphylococcus	Georgia	2.86E-08	−2.86	Vaginal	0.005	2.40				Day 90	3.18E-08	−3.72	Day 90	4.43E-08	−2.78
g_Rothia
g_Clostridium	Georgia	0.024	−1.04
g_Blautia
f_Enterobacteriaceae; Other	Georgia	8.65E-05	−2.10

The “Country”, “Birth Method”, and “Day” columns indicate the base group for comparison, and the sign of the corresponding β coefficient indicates whether the taxa is enriched (+) or depleted (−) in the group specified in the column to its left. Non-significant results are left blank.