Relative changes in dietary intake between baseline and endpoint among subjects reporting their diet at both time points (N = 342).

Abbreviations: CI: Confidence interval; RR relative risk 1 Institute of Medicine and National Research Council. Weight gain during pregnancy: re-examining the guidelines. Washington (DC): National Academy Press; 2009. 2mean difference (Δ = endpoint—baseline) compared to the reference group. The relative risk of having either low or excessive weight gain as defined by the institute of medicine1 is also shown for each group.