Figure 3

Estimated trajectories of blood pressure change from pre-gravid level, stratified by the pre-gravid mean arterial pressure tertile. Stratifications were created according to the pre-gravid mean arterial pressure tertiles. Different colors signified different tertiles. Women in the highest pre-gravid MAP tertile had the largest BP drop at the beginning of pregnancy, while women in the lowest MAP tertile showed no BP drop at the beginning. Women in the highest tertile showed DBP drop around 15 weeks of gestation. Women in the lowest tertile showed some BP fluctuations at the before 15 weeks of gestation.