Evidence map›Paper›PMID 26131154›Full record

ArticleInternational journal of clinical and experimental medicine2015

Association between vitamin D deficiency and insufficiency and the risk of childhood asthma: evidence from a meta-analysis.

Lixin Man, Zhao Zhang, Meng Zhang, Yingying Zhang, Ju Li, Nan Zheng, Yanhua Cao, Ming Chi, Yujin Chao, Qiuer Huang and 2 more

Abstract read
In one paragraph

Article in International journal of clinical and experimental medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 5 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

10 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Association of free vitamin DAnnals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology · 2018
    Trial
  7. Genetic polymorphisms in vitamin D pathway influence 25(OH)D levels and are associated with atopy and asthma.Allergy, asthma, and clinical immunology : official journal of the Canadian Society of Allergy and Clinical Immunology · 2020
    Article
  8. Review
  9. Article
  10. The impact of vitamin D on asthmatic human airway smooth muscle.Expert review of respiratory medicine · 2016
    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

12 authors.

Lixin ManDepartment of Pediatrics, General Hospital of Jinan Military Area China.
Zhao ZhangShandong Traditional Chinese Medicine University China.
Meng ZhangShandong Traditional Chinese Medicine University China.
Yingying ZhangDepartment of Pediatrics, General Hospital of Jinan Military Area China.
Ju LiDepartment of Pediatrics, People's Hospital of Pingyi Shandong Province, China.
Nan ZhengDepartment of Pediatrics, General Hospital of Jinan Military Area China.
Yanhua CaoDepartment of Pediatrics, General Hospital of Jinan Military Area China.
Ming ChiDepartment of Pediatrics, General Hospital of Jinan Military Area China.
Yujin ChaoDepartment of Pediatrics, General Hospital of Jinan Military Area China.
Qiuer HuangDepartment of Pediatrics, General Hospital of Jinan Military Area China.
Chunmei SongDepartment of Pediatrics, General Hospital of Jinan Military Area China.
Bo XuDepartment of Pediatrics, General Hospital of Jinan Military Area China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveWhether vitamin D deficiency and insufficiency are associated with childhood asthma remains unclear. Thus, we conducted a meta-analysis to summarize the evidence from epidemiological studies of vitamin D deficiency and insufficiency and the risk of childhood asthma.

methodsPertinent studies were identified by searching of PubMed and Web of Knowledge. The random effect model was used to combine the results. Meta-regression and subgroups analyses were used to explore potential sources of between-study heterogeneity. Publication bias was estimated using Egger's regression asymmetry test.

resultsFinally, 14 articles with 15 studies including 3424 cases for vitamin D deficiency and 9 articles with 10 studies including 2756 cases for vitamin D insufficiency were included in this meta-analysis. The relative risk (95% confidence interval) of childhood asthma risk for vitamin D deficiency was 1.684 (1.321-2.148), and the associations were significant in America and Europe. Significant association of childhood asthma between vitamin D insufficiency and childhood asthma risk was found overall [1.577 (1.230-2.023)] and the subgroups of America, Europe and Asia. No evidence of significant publication bias between vitamin D deficiency and insufficiency and childhood asthma risk were found.

conclusionsResults from this meta-analysis suggested that vitamin D deficiency and insufficiency might increase the risk of childhood asthma.

Indexed as

childhood asthmameta-analysisVitamin D deficiencyvitamin D insufficiency

Identifiers

PMID26131154
PMCPMC4483990

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.