Figure 7

Association between breastfeeding exposures and attentional “problems” and “emotional reactivity” domains scores at 2 years of age. Attentional “problems” reflects the child’s scores on the attentional problems subscale of the preschool version of the Child Behavior Checklist (CBCL). In this sample, none of the children scored above the clinical or borderline clinical thresholds for attentional problems on the CBCL; therefore, the scores reflect the variation within the normal range. The central dots represent the change in the neurodevelopmental score (with vertical lines representing 95% CIs) for each unit increase in the continuous exposure. Results from linear regression models adjusted for age at assessment, sex, gestational age at birth, birth weight, birth length, NICU stay, maternal education, maternal age, fetal head circumference z-score, postnatal smoking exposure, and length z-score at 2 years. For formula use, we further adjusted by the timing of initiation. With robust standard errors. EBF = duration of exclusive breastfeeding in months. Feeds = number of breast milk feeds per day. BF = duration of any breastfeeding in months. Formula = duration of formula use in months. Intro solids = weaning age in months.