Evidence map›Paper›PMID 31910936›Full record

ArticlePublic health nutrition2020

Anaemia, iron deficiency, iron-deficiency anaemia and their associations with obesity among schoolchildren in Guangzhou, China.

Hao Zheng, Weiqing Long, Weiqing Tan, Chen Yang, Muqing Cao, Yanna Zhu

Open access · greenAbstract read
In one paragraph

Article in Public health nutrition, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 17% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
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  6. Boosting nutritional value: the role of iron fortification in meat and meat products.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Hao ZhengDepartment of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou City, People's Republic of China.
Weiqing LongDepartment of Clinical Laboratory, First Affiliated Hospital of Sun Yat-sen University, Guangzhou City, People's Republic of China.
Weiqing TanHealth Promotion Center for Primary and Secondary School Children of Guangzhou, Guangzhou City, People's Republic of China.
Chen YangDepartment of Physical Examination, First Affiliated Hospital of Sun Yat-sen University, Guangzhou City, People's Republic of China.
Muqing CaoDepartment of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou City, People's Republic of China.
Yanna ZhuDepartment of Maternal and Child Health and Sun Yat-sen Global Health Institute, School of Public Health and Institute of State Governance, Sun Yat-sen University, No.74 Zhongshan Road II, Guangzhou City, People's Republic of China.ORCID 0000-0003-4160-3695
Sun Yat-sen University · CNGuangzhou Center for Disease Control and Prevention · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThe association of Fe metabolism with obesity in children remains unclear. The present study aimed to assess the status of Fe metabolism parameters, the prevalence of anaemia, Fe deficiency (ID) and Fe-deficiency anaemia (IDA), and the associations of these variables with obesity in Chinese schoolchildren.

designA cross-sectional study conducted in 5295 schoolchildren aged 7-11 years in Guangzhou, China, 2014-2015. Full data of anthropometric and Fe metabolic parameters were collected to assess obesity, anaemia, ID and IDA. Logistic regression models were established to determine the possible associations of anaemia, ID and IDA with obesity. Two-tailed P values of <0·05 was considered statistically significant.

settingGuangzhou City, China.

participantsSchoolchildren aged 7-11 years (n 5295).

resultsIn this sample, mean Hb concentration was 128·1 g/l and the prevalence of anaemia, ID and IDA was 6·6, 6·2 and 0·6 %, respectively. Of the participants, 14·0 % were overweight and 8·8 % were obese. Importantly, obesity was associated with lower anaemia risk (adjusted OR = 0·553; 95 % CI 0·316, 0·968) but higher ID risk (adjusted OR = 1·808; 95 % CI 1·146, 2·853) after adjustment for confounders. No significant relationship was found between obesity and IDA.

conclusionsOur results confirmed that anaemia and ID remain public health concerns among schoolchildren in Guangzhou, while IDA is remarkably less prevalent. Furthermore, obesity was associated with lower anaemia risk, but higher ID risk. More efforts should be made to prevent the onset of ID and obesity in the same individual, thus improving the health and fitness of children.

Indexed as

Iron DeficienciesAnemiaAnemia, Iron-DeficiencyAnthropometryChildChinaCross-Sectional StudiesFemaleHumansIronLogistic ModelsMalePediatric ObesityPrevalenceStudentsIronAnaemiaIron deficiencyIron-deficiency anaemiaObesitySchoolchildren

Identifiers

PMID31910936
PMCPMC10200432
OpenAlexW2999943381

What OpenQuestion holds

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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.