. Author manuscript; available in PMC: 2021 Mar 1.

Published in final edited form as: Obstet Gynecol. 2020 Mar;135(3):583–590. doi: 10.1097/AOG.0000000000003697

Table 4.

Multivariable Model Results for Infant Feeding Method^*

	Breastfeeding^†	Breastfeeding & Formula^†
	Odds Ratio (95%CI)	Odds Ratio (95%CI)
LAS score 6–96 hours after delivery
1^st quintile	0.95 (0.74–1.21)	1.07 (0.86–1.34)
2^nd quintile	1.02 (0.81–1.28)	0.96 (0.77–1.20)
3^rd quintile	0.95 (0.75–1.20)	1.03 (0.82–1.29)
4^th quintile	1.01 (0.81–1.27)	1.00 (0.80–1.25)
5^th quintile	(ref)	(ref)
Maternal age, per unit increase in years	1.06 (1.04–1.08)	1.06 (1.04–1.07)
Race or ethnic group
Black Non-Hispanic	0.53 (0.42–0.66)	0.84 (0.68–1.03)
Hispanic	0.79 (0.63–0.98)	2.00 (1.64–2.44)
Other / unknown / Asian	1.07 (0.74–1.54)	1.65 (1.15–2.36)
White Non-Hispanic	(ref)	(ref)
Maternal BMI at admission, per unit increase in kg/m²	0.95 (0.94–0.96)	0.98 (0.97–0.99)
Married or living with partner	2.35 (1.96–2.82)	1.48 (1.26–1.75)
Private insurance	2.38 (1.97–2.88)	1.47 (1.22–1.77)
Smoke cigarettes	0.38 (0.28–0.53)	0.48 (0.36–0.63)
Successful delivery type
Forceps / vacuum vaginal	1.42 (1.04–1.93)	0.79 (0.58–1.07)
Spontaneous vaginal	1.34 (1.09–1.65)	0.93 (0.77–1.11)
Cesarean	(ref)	(ref)
Neonatal intermediate or intensive care unit admission	0.64 (0.51–0.81)	0.82 (0.66–1.01)

Abbreviations: LAS, labor agentry scale; BMI, body mass index.

Multinomial logistic model includes all variables in the table.

^†

Compared with exclusive formula feeding.