AFP and preeclampsia: When the cutoff value of MS-AFP 2.5 MoM was used, higher risks of SGA (OR: 1.90, 95% CI: 1.34-2.69), preterm birth (OR: 2.53, 95% CI: 1.65-3.88), and preeclampsia (OR: 3.05, 95% CI: 1.71-5.43) were observed in women with MS-AFP ≥ 2.5 MoM.