Main findings
In this large multicenter study, including an unselected population of
singleton pregnancies from four countries in Latin America, the
proportion of SGA and FGR neonates identified by the WHO fetal growth
standard was significantly higher than that obtained using the
IG-21st standards. Nevertheless, the overall
diagnostic performance for the adverse neonatal outcome and the low
ponderal index was better when IG-21st defined SGA and FGR.