International estimated fetal weight standards of the INTERGROWTH ‐21 st Project

作者：J. Stirnemann, José Villar, Laurent Salomon, E. Ohuma, P Ruyan, Douglas G. Altman, François Nosten, Rachel Craik, Shama Munim, Leila Cheikh Ismail, Fernando C. Barros, Ann Lambert, Shane A. Norris, Mário Henrique Burlacchini de Carvalho, Yasmin A. Jaffer, J. Alison Noble, Enrico Bertino, M. G. Gravett, Manorama Purwar, César G. Victora, Ricardo Uauy, Zulfiqar A Bhutta, Stephen Kennedy, Aris T. Papageorghiou · 发表于：Ultrasound in Obstetrics and Gynecology · 年份：2017 · DOI：10.1002/uog.17347 · 被引用次数：365 · 研究领域：Pregnancy and preeclampsia studies、Birth, Development, and Health、Gestational Diabetes Research and Management

ABSTRACT Objective Estimated fetal weight ( EFW ) and fetal biometry are complementary measures used to screen for fetal growth disturbances. Our aim was to provide international EFW standards to complement the INTERGROWTH ‐21 st Fetal Growth Standards that are available for use worldwide. Methods Women with an accurate gestational‐age assessment, who were enrolled in the prospective, international, multicenter, population‐based Fetal Growth Longitudinal Study ( FGLS ) and INTERBIO ‐21 st Fetal Study ( FS ), two components of the INTERGROWTH ‐21 st Project, had ultrasound scans every 5 weeks from 9–14 weeks' until 40 weeks' gestation. At each visit, measurements of fetal head circumference ( HC ), biparietal diameter, occipitofrontal diameter, abdominal circumference ( AC ) and femur length ( FL ) were obtained blindly by dedicated research sonographers using standardized methods and identical ultrasound machines. Birth weight was measured within 12 h of delivery by dedicated research anthropometrists using standardized methods and identical electronic scales. Live babies without any congenital abnormality, who were born within 14 days of the last ultrasound scan, were selected for inclusion. As most births occurred at around 40 weeks' gestation, we constructed a bootstrap model selection and estimation procedure based on resampling of the complete dataset under an approximately uniform distribution of birth weight, thus enriching the sample size at extremes of fetal sizes, t...