↵a Variables considered in the adjustment include all those in Tables 1 to 3. Only variables related to both infant alcohol and at least 1 Griffiths score were entered into the regression analysis.
↵b Because of missing values in the variables used for adjustment, N varies in each scale.
↵c Infant alcohol exposure is the absolute alcohol content of maternal alcohol intake on an average day multiplied by the proportion of breast milk in the infant’s diet. For example, an exclusively breastfed infant would have a score of 1.0 if the mother drank an average of 1.0 fl oz ethanol (about 2 drinks) daily. This estimator includes the ethanol in binges. Infant alcohol exposure via binge is the product of the number of binges in the previous month and the proportion of breast milk in the diet. For example, a value of 1.0 would occur when the exclusively breastfed infant was exposed to 1 maternal binge a month in the study period; it could also occur when the infant who received 50% breast milk was exposed to 2 maternal binges a month in the study period.