Fig. 2
From: Development of a biophysical screening model for gestational hypertensive diseases
Flowchart summarizing the total numbers of patients and assessments in each trimester, obtained from the observational study between 2011 and 2016 as part of the Hasselt University Research Project of Maternal Venous Hemodynamics. The grey zones are the patients included in this analysis. T1: trimester 1; T2: trimester 2; T3: trimester 3; GH: Gestational hypertension; LPE: Late preeclampsia; EPE: Early preeclampsia; EH: Essential hypertension; SGA: Small for gestational age