Effect of routine first trimester combined screening for pre-eclampsia on small for gestational age birth: a secondary interrupted time series analysis.

First trimester FMF combined screening for pre-eclampsia with elective birth from 40 weeks' gestation resulted in a significant relative 45% effect reduction for term SGA birth at <10th centile, but not SGA at <5th or 3rd centile. Further screening strategies to detect and improve outcomes for SGA <5th centile birth need to be considered. This article is protected by copyright. All rights reserved.