Evidence map›Paper›PMID 34006228›Full record

ArticleBMC infectious diseases2021

Lack of association between vitamin D insufficiency and clinical outcomes of patients with COVID-19 infection.

Alireza Davoudi, Narges Najafi, Mohsen Aarabi, Atefeh Tayebi, Roja Nikaeen, Hamideh Izadyar, Zahra Salar, Leila Delavarian, Narges Vaseghi, Zahra Daftarian and 1 more

Abstract read
In one paragraph

Article in BMC infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–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

14 citing papers in PubMed.

  1. Trial
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  5. Observational
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  9. Review
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  11. Essential metals, vitamins and antioxidant enzyme activities in COVID-19 patients and their potential associations with the disease severity.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2022
    Article
  12. Review
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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

11 authors.

Alireza DavoudiAntimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.
Narges NajafiAntimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.
Mohsen AarabiDepartment of Family Medicine, School of Medicine, Mazandaran University of Medical Sciences, Sari, Iran.
Atefeh TayebiAntimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.
Roja NikaeenDepartment of Biostatistics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Hamideh IzadyarAntimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.
Zahra SalarMazandaran University of Medical Science, Ramsar International Branch, Ramsar, Iran.
Leila DelavarianAntimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.
Narges VaseghiDepartment of Pathobiology, Science and Research Branch, Islamic Azad University, Tehran, Iran.
Zahra DaftarianAntimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran.
Fatemeh AhangarkaniAntimicrobial Resistance Research Center, Communicable Diseases Institute, Mazandaran University of Medical Sciences, Sari, Iran. Fkani63@gmail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA protective effect of vitamin D against COVID-19 infection is under investigation. We aimed to analyze the effect of vitamin D sufficiency on the clinical outcomes of patients infected with COVID-19.

methodsIn this cross-sectional study we analyzed the vitamin D levels of COVID-19 patients who were admitted to Razi Hospital (an infectious disease referral center in Mazandaran province in northern Iran) from February to March 2020. Overall, a cutoff point of 30 ng/mL was used for the definition of vitamin D sufficiency.

resultsOne hundred fifty-three patients were analyzed in this study who had laboratory documentation of a 25(OH) D level at the time of hospitalization. The vitamin D levels of the patients were 27.19 ± 20.17 ng/mL. In total, 62.7% (n = 96) of the patients had a 25(OH) D level of less than 30 ng/mL and 37.25% (n = 57) had a 25(OH) D level of more than 30 ng/mL. In total, 49% (n = 75) of the patients suffered from at least one underlying disease. The univariate and multivariable regression showed that vitamin D sufficiency was not associated with a statistically significant lower risk of adverse clinical outcomes of COVID-19 such as duration of hospitalization and severity of infection (P > 0.05).

conclusionsSufficient vitamin D levels were not found to be protective against adverse clinical outcomes in patients infected with COVID-19. Chronic disorders in COVID-19 patients were found to have greater relevance than vitamin D levels in determining the adverse outcomes of the infection. Further studies are needed to determine the role of vitamin D level in predicting the outcomes of COVID-19 infection.

Indexed as

Length of StaySeverity of Illness IndexAdultAgedCalcifediolCOVID-19COVID-19 Nucleic Acid TestingCross-Sectional StudiesFemaleHospitalizationHospitalsHumansIranMaleMiddle AgedRetrospective StudiesCalcifediolCoronavirusCOVID-19InsufficiencySARS-CoV-2SufficiencyVitamin D

Identifiers

PMID34006228
PMCPMC8130780

What Socratic 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 Socratic graph.