Evidence map›Paper›PMID 34043645›Full record

SynthesisPloS one2021

Correlation between neonatal hyperbilirubinemia and vitamin D levels: A meta-analysis.

Jiayu Huang, Qian Zhao, Jiao Li, Jinfeng Meng, Shangbin Li, Weichen Yan, Jie Wang, Changjun Ren

Open access · goldAbstract readComparative StudyMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
5.3field-weighted citation impact, top 5% 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

9 citing papers in PubMed, 26 citations in OpenAlex.

  1. NLRP3 inflammasome: a key player in neonatal brain injury.Clinical and experimental pediatrics · 2025
    Article
  2. Article
  3. Review
  4. Article
  5. Effect ofFrontiers in nutrition · 2025
    Article
  6. Article
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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

8 authors at 1 institution in 1 country.

Jiayu HuangThe First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.ORCID 0000-0002-9248-7471
Qian ZhaoThe First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
Jiao LiThe First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
Jinfeng MengThe First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
Shangbin LiThe First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
Weichen YanThe First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
Jie WangThe First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.
Changjun RenThe First Affiliated Hospital of Hebei Medical University, Shijiazhuang, Hebei, China.ORCID 0000-0002-3110-5660
Hebei Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveHyperbilirubinemia is a common disease in the neonatal period, and hyperbilirubinemia may cause brain damage. Therefore, prevention and diagnosis and management of hyperbilirubinemia is very important, and vitamin D may affect bilirubin levels. To evaluate the relationship between neonatal hyperbilirubinemia and vitamin D levels.

methodThe China National Knowledge Infrastructure, VIP, Wanfang, Chinese Biology Medicine Disc, PubMed, Web of Science, Cochrane Library, and Embase databases as well as clinical trial registries in China and the United States were searched for relevant studies from inception to September 2020 without restrictions on language, population, or year. The studies was screened by two reviewers independently, the data were extracted, and the risk of bias of the included studies was evaluated using the NOS. A meta-analysis was conducted on the included studies using Stata11 software.

resultsSix case-control studies were included, and the methodological quality of the studies was high (grade A). The studies included 690 newborns; more than 409 were diagnosed with hyperbilirubinemia. The means and standard deviations were calculated. Meta-analysis results showed that neonatal vitamin D levels were 7.1 ng/ml lower among infants with hyperbilirubinemia than among healthy newborn levels (z = 6.95, 95% CI 9.10 ~ 5.09, P < 0.05). Subgroup analysis was conducted based on whether the bilirubin levels were concentrated in the 15 to 20 mg/dl range. Vitamin D level of infants with hyperbilirubinemia (the bilirubin levels were concentrated in the 15 to 20 mg/dl range) was 9.52 ng/ml (Z = 15.55, 95% CI-10.72~-8.32, P<0.05) lower than that of healthy infants. The bilirubin levels in four cases were not concentrated in the 15-20 mg/dl range. The results showed that the vitamin D level of hyperbilirubinemia (The bilirubin levels were not concentrated in the 15-20 mg/dl range) neonates were 5.35 ng/ml lower than that of healthy neonates (Z = 6.43, 95% CI-6.98~-3.72, P<0.05).

conclusionVitamin D levels were observed to be lower in neonates with hyperbilirubinemia as compared to term neonates without hyperbilirubinemia in this study. This can possibly suggest that neonates with lower vitamin D levels are at higher risk for developing hyperbilirubinemia.

Indexed as

Brain InjuriesHumansHyperbilirubinemia, NeonatalInfant, NewbornVitamin DVitamin D

Identifiers

PMID34043645
PMCPMC8158937
OpenAlexW3164776312

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.