Table 2. Change in Shannon diversity, according to socioeconomic status and antibiotic exposure.

Body site/exposure	Univariateassociation		Multivariate association1		Multivariate association2
	Coefficent	p-value	Coefficent	p-value	Coefficent	p-value
VAGINAL
Level of EducationA	0.48	0.02	0.50	0.03	0.55	0.02
Prenatal InsuranceB	0.25	0.31	0.19	0.51	0.26	0.43
Marital/CohabitingC	0.10	0.61	0.05	0.81	0.08	0.71
Antibiotics prior to Visit 1	−0.14	0.57	−0.16	0.52	N/A	N/A
Antibiotics between Visit 1 & 2	−0.17	0.46	−0.19	0.41	N/A	N/A
ORAL
Level of EducationA	0.03	0.77	−0.01	0.94	0.001	0.99
Prenatal InsuranceB	−0.13	0.34	−0.20	0.19	−0.19	0.21
Marital/CohabitingC	0.08	0.49	0.05	0.66	0.06	0.75
Antibiotics prior to Visit 1	0.07	0.62	0.05	0.75	N/A	N/A
Antibiotics between Visit 1 & 2	−0.03	0.84	−0.05	0.73	N/A	N/A
GUT
Level of Education	0.07	0.63	0.05	0.74	0.05	0.78
Prenatal Insurance	−0.03	0.84	−0.09	0.61	−0.10	0.58
Marital/Cohabiting	0.03	0.80	0.07	0.60	0.08	0.60
Antibiotics prior to Visit 1	0.12	0.42	0.13	0.40	N/A	N/A
Antibiotics between Visit 1 & 2	−0.02	0.90	0.01	0.98	N/A	N/A

Notes.

¹Model controlling for age, any previous term birth, any previous preterm birth, weeks between sampling.

²Model controlling for age, any previous term birth, any previous preterm birth, weeks between sampling, and antibiotics.

^AEducation coded as 1 for high school or lower, 0 for some college or higher.

^BPrenatal insurance coded as 1 for Medicaid, 0 for Private.

^CMarital/Co-habiting coded as 1 for Single or Not cohabiting, 0 for Married or Cohabiting.

The bold styling indicates a p-value that is statistically significant at α < 0.05.