Evidence map›Paper›PMID 33625695›Full record

ArticleWorld journal of pediatrics : WJP2021

Association between gestational anemia in different trimesters and neonatal outcomes: a retrospective longitudinal cohort study.

Chang-Fa Sun, Han Liu, Yan-Hui Hao, Hong-Tao Hu, Zhi-Yang Zhou, Ke-Xin Zou, Xin-Mei Liu, Jian-Zhong Sheng, Guo-Lian Ding, He-Feng Huang

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Article in World journal of pediatrics : WJP, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 4 pooled it
2.9field-weighted citation impact, top 8% 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

20 citing papers in PubMed, 4 syntheses or guidelines pooled it, 26 citations in OpenAlex.

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  3. Daily oral iron supplementation during pregnancy.The Cochrane database of systematic reviews · 2024
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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

10 authors at 3 institutions in 1 country.

Chang-Fa SunThe International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 910 Hengshan Road, Shanghai, 200030, China.
Han LiuThe International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 910 Hengshan Road, Shanghai, 200030, China.
Yan-Hui HaoThe International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 910 Hengshan Road, Shanghai, 200030, China.
Hong-Tao HuThe International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 910 Hengshan Road, Shanghai, 200030, China.
Zhi-Yang ZhouThe International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 910 Hengshan Road, Shanghai, 200030, China.
Ke-Xin ZouThe International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 910 Hengshan Road, Shanghai, 200030, China.
Xin-Mei LiuThe International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 910 Hengshan Road, Shanghai, 200030, China.
Jian-Zhong ShengDepartment of Pathology and Pathophysiology, School of Medicine, Zhejiang University, Hangzhou, China.
Guo-Lian DingThe International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 910 Hengshan Road, Shanghai, 200030, China.
He-Feng HuangThe International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, 910 Hengshan Road, Shanghai, 200030, China. huanghefg@sjtu.edu.cn.
Shanghai Jiao Tong University · CNInternational Peace Maternity & Child Health Hospital · CNZhejiang University · CN

Funding

International Science and Technology Cooperation Programme (CN) 81661128010National Basic Research Program of China (973 Program) 2017YFC1001300
6 · The paper itself

Abstract

backgroundPrevious studies investigated the association between gestational anemia and neonatal outcomes. However, few studies explored whether the effects of gestational anemia could be eliminated by subsequent correction of anemia in the later stages of pregnancy. This study aimed to investigate the relationship between anemia in different trimesters and neonatal outcomes.

methodsThe study was conducted in Shanghai, China, with a sample of 46,578 pregnant women who delivered between January 1, 2016 and July 1, 2019. A multivariable logistic regression model was adopted to analyse the associations between maternal anemia and neonatal outcomes.

resultsThe incidence of gestational anemia was 30.2%, including 4.4% in the first trimester, 9.6% in the second trimester, and 16.2% in the third trimester. Only 24.5% (507/2066) of anemia that occurred in the first trimester and 29.6% (1320/4457) that occurred in the second trimester could be corrected in the later stages of pregnancy. Anemia occurring in the first trimester was associated with small for gestational age [odds ratio (OR) 1.46; 95% confidence interval (CI) 1.20-1.78] and with fetal distress (OR 1.23; 95% CI 1.08-1.40). Anemia corrected in the first trimester also was associated with a higher risk of small for gestational age.

conclusionsGestational anemia is a public health problem in China impacting neonatal health. Anemia in pregnancy could be corrected in only about a quarter of the women. Anemia in the first trimester, whether corrected or not, still led to lower birth weight; therefore, the prevention of anemia prior to pregnancy is important.

Indexed as

Pregnancy OutcomeAdultAnemiaChinaFemaleGestational AgeHumansIncidenceInfant, NewbornLongitudinal StudiesPregnancyRetrospective StudiesHemoglobinIron deficiencyLow birth weightPreterm birthSmall for gestational age

Identifiers

PMID33625695
OpenAlexW3130568753

What OpenQuestion holds

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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.