TABLE 3.

Univariate associations with BMT.

Variable	p-valuea
Age	0.41
Prepregnancy BMI	0.042
Weight gain during pregnancy (lbs)	0.050
Parity	0.15
Delivery mode	0.45
Maternal prenatal antibiotics	0.87
Maternal peripartum antibiotics	0.28
Maternal antibiotics by 4-months postpartum	0.97
Infant feeding behavior	0.60
Gestational age at delivery	0.69
Infant sex	0.99
Postpartum collection week	0.13

^ap-values calculated using Fisher’s exact test or Kruskal–Wallis rank-sum test.