Evidence map›Paper›PMID 34127756›Full record

Observational studyScientific reports2021

Swedish intrauterine growth reference ranges for estimated fetal weight.

Linda Lindström, Mårten Ageheim, Ove Axelsson, Laith Hussain-Alkhateeb, Alkistis Skalkidou, Anna-Karin Wikström, Eva Bergman

Open access · goldAbstract readMulticenter StudyObservational Study
In one paragraph

Observational study in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 23% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Article
  5. Article
  6. Observational
  7. Stillbirth in Iceland 1996-2021: Incidence and etiology.Acta obstetricia et gynecologica Scandinavica · 2025
    Article
  8. Article
  9. Article
  10. Accuracy and precision of sonographic fetal weight estimation in Sweden.Acta obstetricia et gynecologica Scandinavica · 2023
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Linda LindströmDepartment of Women's and Children's Health, Uppsala University, Uppsala, Sweden. linda.lindstrom@kbh.uu.se.ORCID 0000-0003-4427-1075
Mårten AgeheimDepartment of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
Ove AxelssonDepartment of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
Laith Hussain-AlkhateebGlobal Health, School of Public Health and Community Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
Alkistis SkalkidouDepartment of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
Anna-Karin WikströmDepartment of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
Eva BergmanDepartment of Women's and Children's Health, Uppsala University, Uppsala, Sweden.
Uppsala University · SEUniversity of Gothenburg · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fetal growth restriction is a strong risk factor for perinatal morbidity and mortality. Reliable standards are indispensable, both to assess fetal growth and to evaluate birthweight and early postnatal growth in infants born preterm. The aim of this study was to create updated Swedish reference ranges for estimated fetal weight (EFW) from gestational week 12-42. This prospective longitudinal multicentre study included 583 women without known conditions causing aberrant fetal growth. Each woman was assigned a randomly selected protocol of five ultrasound scans from gestational week 12 + 3 to 41 + 6. Hadlock's 3rd formula was used to estimate fetal weight. A two-level hierarchical regression model was employed to calculate the expected median and variance, expressed in standard deviations and percentiles, for EFW. EFW was higher for males than females. The reference ranges were compared with the presently used Swedish, and international reference ranges. Our reference ranges had higher EFW than the presently used Swedish reference ranges from gestational week 33, and higher median, 2.5th and 97.5th percentiles from gestational week 24 compared with INTERGROWTH-21st. The new reference ranges can be used both for assessment of intrauterine fetal weight and growth, and early postnatal growth in children born preterm.

Indexed as

Fetal DevelopmentAdultBirth WeightFemaleFetal Growth RetardationFetal WeightFetusGestational AgeHumansInfant, NewbornInfant, PrematureLongitudinal StudiesMaleMaternal AgePregnancyPregnancy Trimesters

Identifiers

PMID34127756
PMCPMC8203766
OpenAlexW3168533447

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.