Evidence map›Paper›PMID 33434117›Full record

ArticleJournal of the American College of Nutrition2021

Vitamin D Deficiency and Low Serum Calcium as Predictors of Poor Prognosis in Patients with Severe COVID-19.

Salam Bennouar, Abdelghani Bachir Cherif, Amel Kessira, Djamel-Eddine Bennouar, Samia Abdi

Open access · greenAbstract read
In one paragraph

Article in Journal of the American College of Nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed, 7 pooled it
13.2field-weighted citation impact, top 1% 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

45 citing papers in PubMed, 7 syntheses or guidelines pooled it, 94 citations in OpenAlex.

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  17. Association ofGenes · 2023
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  18. Hypermagnesemia and hyperphosphatemia are highly prevalent in patients with COVID-19 and increase the risk of death.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2022
    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

5 authors at 2 institutions in 1 country.

Salam BennouarCentral Laboratory of Clinical Biology, University Hospital Center of Blida, Blida, Algeria.ORCID 0000-0001-7414-6721
Abdelghani Bachir CherifDepartment of Internal Medicine and Cardiology, University Hospital Center of Blida, Blida, Algeria.
Amel KessiraDepartment of Hemobiology and Blood Transfusion, University Hospital Center of Annaba, Annaba, Algeria.
Djamel-Eddine BennouarDepartment of Hemobiology and Blood Transfusion, University Hospital Center of Annaba, Annaba, Algeria.
Samia AbdiCentral Laboratory of Clinical Biology, University Hospital Center of Blida, Blida, Algeria.
University of Blida · DZBadji Mokhtar-Annaba University · DZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe severity of Coronavirus Disease 2019 (COVID-19) is a multifactorial condition. An increasing body of evidence argues for a direct implication of vitamin D deficiency, low serum calcium on poor outcomes in COVID-19 patients. This study was designed to investigate the relationship between these two factors and COVID-19 in-hospital mortality. MATERIALS: This is a prospective study, including 120 severe cases of COVID-19, admitted at the department of Reanimation-Anesthesia. Vitamin D was assessed by an immuno-fluoroassay method. Total serum calcium by a colorimetric method, then, corrected for serum albumin levels. The association with in-hospital mortality was assessed using the Kaplan-Meier survival curve, proportional Cox regression analyses and the receiver operating characteristic curve.

resultsHypovitaminosis D and hypocalcemia were very common, occurring in 75% and 35.8% of patients. When analyzing survival, both were significantly associated with in-hospital mortality in a dose-effect manner (p

conclusionThis study demonstrates the high frequency of hypocalcemia and hypovitaminosis D in severe COVID-19 patients and provides further evidence of their potential link to poor short-term prognosis. It is, therefore, possible that the correction of hypocalcemia, as well as supplementation with vitamin D, may improve the vital prognosis.

Indexed as

AgedAlgeriaCalciumCOVID-19FemaleHospitalizationHospital MortalityHumansHypocalcemiaKaplan-Meier EstimateMaleMiddle AgedPrognosisProportional Hazards ModelsProspective StudiesReference Values25-hydroxyvitamin DCalciumVitamin DCOVID-19hypocalcemiain-hospital mortalityvitamin D deficiency

Identifiers

PMID33434117
PMCPMC7814570
OpenAlexW3120953742

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.