. Author manuscript; available in PMC: 2022 Oct 18.

Published in final edited form as: J Pediatr. 2018 Jul 13;201:27–33.e4. doi: 10.1016/j.jpeds.2018.06.004

Table VI.

Unadjusted and adjusted^* longitudinal mixed models for the association between categories of NBW group/weight-for-age status and percentage breast milk (n = 1590) and daily formula consumption (n = 1132) between birth to 6 months

Empty Cell	Model 1 ß (95% CI)		Model 2^* ß (95% CI)		Model 3^* ß (95% CI)
Variable	Percentage breast milk	Daily formula consumption	Percentage breast milk	Daily formula consumption	Percentage breast milk	Daily formula consumption
NBW-high	−13.87 (−19.60, −8.14)^†	6.29 (3.93, 8.64)^†	−12.22 (−17.90, −6.54)	5.68 (3.35, 8.01)^†	−11.67 (−17.41, −5.93)^†	5.34 (2.86, 7.82)^†
Age	−0.92 (−1.01, −0.83)^†	0.43 (0.38, 0.49)^†	−0.92 (−1.01, −0.83)^†	0.44 (0.38, 0.49)^†	−1.09 (−1.24, −0.95)^†	0.90 (0.77, 1.02)^†
NBW-high × age	−0.10 (−0.32, 0.12)	−.09 (−0.20, .04)	−0.10 (−0.32, 0.12)	−.08 (−0.20, .04)	−0.27 (−0.62, .08)	−.01 (−0.29, 0.27)
Age²					.01 (.00, .01)^‡	−.02 (−.03, −.02)^†
NBW-high × age²					.01 (−.01, .02)	−.00 (−.01, .01)
Model fit statistics
Deviance	77 802	39 592	77 758	39 538	77 740	39 456
AIC	77 818	39 608	77 790	39 571	77 777	39 492
BIC	77 875	39 660	77 903	39 675	77 905	39 610

NBW-high, NBW infants with high weight-for-age.

Models are adjusted for mother’s age, prepregnancy BMI, gestational age, infant sex, race/ethnicity, and PIR.

^†

P < .001.

^‡

P < .05.