3.3. Growth and Anthropometric Measurements
weight gain
REGRESSION
There was a significant increase in the rate of weight gain in the 2 weeks after starting hindmilk compared with the prior 2 weeks (MD 3.9 g/kg/day, 95%CI 1.2, 6.5). Because the nutritional intakes and growth during the transitional period after reaching full enteral feeds were unstable in some infants, we compared weight gain between the latest week when the infants were on composite milk with the 2 weeks after hindmilk introduction. The detailed nutrient intakes during this period are summarized in Linear regression analysis showed a significant association between the difference in fat content (Δ fat) between composite milk and hindmilk, and weight Z-score catch-up (Δ) between the start of hindmilk and 4 weeks later (adjusted Δ Z-score 0.40, 95%CI 0.01, 0.8 for every 1 g increase in milk fat), 