Evidence map›Paper›PMID 33437954›Full record

ArticleEClinicalMedicine2020

International values for haemoglobin distributions in healthy pregnant women.

Eric O Ohuma, Melissa F Young, Reynaldo Martorell, Leila Cheikh Ismail, Juan Pablo Peña-Rosas, Manorama Purwar, Maria Nieves Garcia-Casal, Michael G Gravett, Mercedes de Onis, QingQing Wu and 9 more

Abstract read
In one paragraph

Article in EClinicalMedicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

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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

19 authors.

Eric O OhumaMaternal, Adolescent, Reproductive and Child Health (MARCH) Centre, London School of Hygiene and Tropical Medicine (LSHTM), London, UK.
Melissa F YoungHubert Department of Global Health, Emory University, Atlanta, Georgia.
Reynaldo MartorellHubert Department of Global Health, Emory University, Atlanta, Georgia.
Leila Cheikh IsmailClinical Nutrition and Dietetics Department, University of Sharjah, Sharjah, United Arab Emirates.
Juan Pablo Peña-RosasDepartment of Nutrition and Food Safety, World Health Organization, Geneva, Switzerland.
Manorama PurwarNagpur INTERGROWTH-21st Research Centre, Ketkar Hospital, Nagpur, India.
Maria Nieves Garcia-CasalDepartment of Nutrition and Food Safety, World Health Organization, Geneva, Switzerland.
Michael G GravettDepartments of Obstetrics and Gynecology and of Global Health, University of Washington, Seattle, WA, USA.
Mercedes de OnisDepartment of Nutrition and Food Safety, World Health Organization, Geneva, Switzerland.
QingQing WuDepartment of Ultrasound, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing, China.
Maria CarvalhoDepartment of Obstetrics and Gynaecology, Faculty of Health Sciences, Aga Khan University Hospital, Nairobi, Kenya.
Yasmin A JafferDepartment of Family and Community Health, Ministry of Health, Muscat, Oman.
Ann LambertNuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK.
Enrico BertinoUnit of the University, AOU City of Health and Science of Turin, Turin, Italy.
Aris T PapageorghiouNuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK.
Fernando C BarrosPrograma de Pós-Graduação em Saúde e Comportamento, Universidade Católica de Pelotas, Pelotas, Brazil.
Zulfiqar A BhuttaCenter for Global Child Health, Hospital for Sick Children, Toronto, Canada.
Stephen H KennedyNuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK.
Jose VillarNuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK.

Funding

World Health Organization 001
6 · The paper itself

Abstract

backgroundAnaemia in pregnancy is a global health problem with associated morbidity and mortality.

methodsA secondary analysis of prospective, population-based study from 2009 to 2016 to generate maternal haemoglobin normative centiles in uncomplicated pregnancies in women receiving optimal antenatal care. Pregnant women were enrolled <14 weeks' gestation in the Fetal Growth Longitudinal Study (FGLS) of the INTERGROWTH-21

findingsA total of 3502 (81%) of 4321 women who delivered a live, singleton newborn with no visible congenital anomalies, contributed at least one haemoglobin value. Median haemoglobin concentrations ranged from 114.6 to 121.4 g/L, 94 to 103 g/L at the 3

interpretationWe have generated International, gestational age-specific, smoothed centiles for maternal haemoglobin concentration compatible with better pregnancy outcomes, as well as adequate neonatal and early childhood morbidity, growth and development up to 2 years of age.

fundingBill & Melinda Gates Foundation Grant number 49038.

Indexed as

AnaemiaHealthy pregnant womenINTERGROWTH-21stInternational Haemoglobin values

Identifiers

PMID33437954
PMCPMC7788439

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Registered trials

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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.