Fig. 2
From: Gestational weight gain charts for twin pregnancies in Southeast China
Estimated lines from hierarchical linear regression superimposed on crude weight measurements for women with twin pregnancies at the Fujian Provincial Maternity and Children’s Hospital who delivered between January 2013 and November 2019 Grey dots indicate the crude weight measurements. Lines denote the fitted mean, mean ± 1SD, and mean ± 2SD.