Early or late onset biomarker panel scores were plotted as a function of the gestational age. Different panel scores were scaled to the same scoring metric such that they can be directly compared. For either PE or control data points, a loess curve was fitted to represent the overall trend of biomarker scoring as a function of gestation. PE, preeclampsia.
Liu et al. BMC Medicine 2013 11:236 doi:10.1186/1741-7015-11-236