TABLE 3.

Adjusted HRs for Childhood Atopic Disorders

	Vaginal Cohort (n = 9718)		Cesarean Cohort (n = 4328)
	HR	95% CI	HR	95% CI
Composite outcomea
No GBS IAP	Reference	Reference	N/A	N/A
GBS IAP	1.12	0.95–1.32	1.07	0.88–1.31
Other antibiotics	0.96	0.80–1.16	Reference	Reference
Composite outcome without post exposure covariatesa,b
No GBS IAP	Reference	Reference	N/A	N/A
GBS IAP	1.12	0.95–1.32	1.07	0.88–1.31
Other antibiotics	0.97	0.80–1.16	Reference	Reference
Asthmac
No GBS IAP	Reference	Reference	N/A	N/A
GBS IAP	1.10	0.89–1.35	1.02	0.80–1.31
Other antibiotics	0.96	0.77–1.21	Reference	Reference
Eczemad
No GBS IAP	Reference	Reference	N/A	N/A
GBS IAP	1.30	0.99–1.69	1.29	0.94–1.77
Other antibiotics	1.05	0.78–1.41	Reference	Reference
Food allergyd
No GBS IAP	Reference	Reference	N/A	N/A
GBS IAP	1.21	0.84–1.74	1.11	0.71–1.72
Other antibiotics	1.18	0.81,1.72	Reference	Reference
Allergic rhinitisd
No GBS IAP	Reference	Reference	N/A	N/A
GBS IAP	0.87	0.67–1.14	1.05	0.76–1.45
Other antibiotics	0.94	0.71–1.25	Reference	Reference

Adjusted for maternal age, maternal race and ethnicity, maternal BMI, parity, GBS colonization status, chorioamnionitis, maternal asthma, maternal allergy, proportion of residents with less than high school education, median household income quartile, infant’s sex, birth wt-for-gestation z score, neonatal antibiotics, and breastfeeding at 3 mo. N/A, not applicable.

^aIncludes asthma, eczema, and food allergy.

^bExcludes covariates neonatal antibiotics and breastfeeding at 3 mo.

^cIncludes all covariates from primary model except maternal allergy.

^dIncludes all covariates from primary model except maternal asthma.