APOA1 and preeclampsia: Additionally, we found that the ratio of sFlt1/PLGF [0.691 (95%CI: 0.551, 0.83), p = 0.012, during early gestation; 0.926 (95%CI: 0.860, 0.992), p < 0.0001, during mid-term gestation] exhibited better efficiency for predicting the risk of preeclampsia than the level of APOA1 [0.521, (95%CI: 0.351, 0.69), p = 0.785, during early gestation; 0.555, (95%CI: 0.392, 0.717), p = 0.474, during mid-term gestation].