Fig 1. Times of weight measurement and pregnancy term definition.

The rate of gestational weight gain (lb/week) was calculated for terms defined as followings: early pregnancy (from pre-pregnancy to fetal anomaly screening test), mid pregnancy (from fetal anomaly screening test to oral glucose tolerance test), late pregnancy (from oral glucose tolerance test to delivery), “early and mid pregnancy” (from pre-pregnancy to oral glucose tolerance test), “mid and late pregnancy” (from fetal anomaly screening test to delivery), and whole.