Fig. 1: Comparison of feeding practices between infants on an exclusive human milk diet (EHMD) and non-EHMD group.

A A histogram illustrating the distribution of the percentage of days infants received an EHMD between the first day of fortification and 33 6/7 weeks postmenstrual age. The EHMD group was arbitrarily defined as having ā„ 75% of days on an EHMD, whereas the non-EHMD group was defined as having <75% of days on an EHMD. B Boxplots comparing caloric density by day for the first 21 days after diet fortification began between the EHMD and non-EHMD groups. Each boxplot displays the median (thick horizontal line), 25th and 75th percentiles (box edges), and whiskers extending to 1.5 times the interquartile range above and below the percentiles. Dashed lines (dark grey for EHMD, light grey for non-EHMD) indicate the median caloric density for each group over time.