. Author manuscript; available in PMC: 2016 Mar 2.

Published in final edited form as: Clin Pediatr (Phila). 2015 Feb 2;54(11):1059–1067. doi: 10.1177/0009922815569202

Table 4.

Interaction of breastfeeding and age at solid food introduction in relation to weight and weight gain from birth to 12 months, Moms2Moms Study (Ohio, 2011–2012)

Interaction Term	WFA z-score at 12 months^b	Average weight gain per month	Change in WFA z-score from birth to 12 months	Rate of change of WFA z-score

	P-value
Breastfeeding duration (months)*age at solid food introduction (days)^a(n=376)	0.78	0.48	0.11	0.20
Intensity-weighted breastfeeding duration (months)*age at solid food introduction (days)(n=376)	0.65	0.96	0.47	0.66

Introduction of solid foods used as binary variable: <180 days or ≥180 days

Adjusted for: maternal race/ethnicity, WIC receipt, maternal smoking, maternal partner, maternal education level, maternal work/school, gestational age