| Title: |
International estimated fetal weight standards of the INTERGROWTH-21(st) Project. |
| Authors: |
Stirnemann, J; Villar, J; Salomon, LJ; Ohuma, E; Ruyan, P; Altman, DG; Nosten, F; Craik, R; Munim, S; Cheikh Ismail, L; Barros, FC; Lambert, A; Norris, S; Carvalho, M; Jaffer, YA; Noble, JA; Bertino, E; Gravett, MG; Purwar, M; Victora, CG; Uauy, R; Bhutta, Z; Kennedy, S; Papageorghiou, AT; International Fetal and Newborn Growth Consortium for the 21st C; Scientific Advisory Committee; Steering Committees; INTERGROWTH-21st; INTERBIO-21st; Executive Committee; In addition for INTERBIO 21st; Project Coordinating Unit; Data Analysis Group; Data Management Group; Ultrasound Group; In addition for INTERBIO-21st; Anthropometry Group; Laboratory Processing Group; Neonatal Group; Environmental Health Group; Neurodevelopment Group; Participating countries and local investigators |
| Publisher Information: |
Wiley |
| Publication Year: |
2017 |
| Collection: |
St George's University of London: Repository |
| Description: |
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, to achieve consistent estimates across the full range of fetal weight. We constructed reference centiles using second-degree fractional polynomial models. RESULTS: Of the overall population, 2404 babies were born within 14 days of the last ultrasound scan. Mean time between the last scan and birth was 7.7 (range, 0-14) days and was uniformly distributed. Birth weight was best estimated as a function of AC and HC (without FL) as log(EFW) = 5.084820 - 54.06633 × (AC/100)(3) - 95.80076 × (AC/100)(3) × log(AC/100) + 3.136370 × (HC/100), where EFW is in g and AC and ... |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf; application/vnd.openxmlformats-officedocument.wordprocessingml.document |
| Language: |
English |
| ISSN: |
1469-0705 |
| Relation: |
https://openaccess.sgul.ac.uk/id/eprint/109168/3/Stirnemann_et_al-2017-Ultrasound_in_Obstetrics_%26_Gynecology.pdf; https://openaccess.sgul.ac.uk/id/eprint/109168/1/EFW_IG21_UOG_manuscript_R1-%20CLEAN.docx; Stirnemann, J; Villar, J; Salomon, LJ; Ohuma, E; Ruyan, P; Altman, DG; Nosten, F; Craik, R; Munim, S; Cheikh Ismail, L; et al. Stirnemann, J; Villar, J; Salomon, LJ; Ohuma, E; Ruyan, P; Altman, DG; Nosten, F; Craik, R; Munim, S; Cheikh Ismail, L; Barros, FC; Lambert, A; Norris, S; Carvalho, M; Jaffer, YA; Noble, JA; Bertino, E; Gravett, MG; Purwar, M; Victora, CG; Uauy, R; Bhutta, Z; Kennedy, S; Papageorghiou, AT; International Fetal and Newborn Growth Consortium for the 21st C; Scientific Advisory Committee; Steering Committees; INTERGROWTH-21st; INTERBIO-21st; Executive Committee; In addition for INTERBIO 21st; Project Coordinating Unit; Data Analysis Group; Data Management Group; In addition for INTERBIO 21st; Ultrasound Group; In addition for INTERBIO-21st:; Anthropometry Group; In addition for INTERBIO-21st:; Laboratory Processing Group; Neonatal Group; Environmental Health Group; Neurodevelopment Group; Participating countries and local investigators; In addition for INTERBIO-21st:; In addition for INTERBIO-21st: (2017) International estimated fetal weight standards of the INTERGROWTH-21(st) Project. Ultrasound Obstet Gynecol, 49 (4). pp. 478-486. ISSN 1469-0705 https://doi.org/10.1002/uog.17347 SGUL Authors: Papageorghiou, Aris |
| Availability: |
https://openaccess.sgul.ac.uk/id/eprint/109168/ |
| Rights: |
cc_by_4 |
| Accession Number: |
edsbas.C40F0ADA |
| Database: |
BASE |