Temporal Association of Reduced Serum Vitamin D with COVID-19 Infection: Two Single-Institution Case-Control Studies.

Diviya Gupta, Sahit Menon, Michael H Criqui, Bryan K Sun

Open access · goldAbstract read

In one paragraph

Article in Nutrients, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it

0cells of the map it votes in

2citing papers in PubMed

0.3field-weighted citation impact, top 44% 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

2 citing papers in PubMed, 2 citations in OpenAlex.

Low vitamin D levels predict outcomes of COVID-19 in patients with both severe and non-severe disease at hospitalization.Endocrine · 2023
Article
Dietary Patterns, Physical Activity, and Lifestyle in the Onset, Prevention, and Management of Noncommunicable Diseases.Nutrients · 2023
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

4 authors at 1 institution in 1 country.

Diviya GuptaSchool of Medicine, University of California San Diego, La Jolla, CA 92093, USA.

Sahit MenonSchool of Medicine, University of California San Diego, La Jolla, CA 92093, USA.

Michael H CriquiSchool of Medicine, University of California San Diego, La Jolla, CA 92093, USA.

Bryan K SunSchool of Medicine, University of California San Diego, La Jolla, CA 92093, USA.

University of California, San Diego · US

Funding

University of California San Diego Office of Research Affairs N/A

6 · The paper itself

Abstract

(1) Background: Vitamin D supplementation has been proposed for the prevention and treatment of COVID-19, but it is not clear if reduced serum vitamin D predisposes individuals to COVID-19 and/or is a secondary consequence of infection. This study assessed the temporal association between serum vitamin D and COVID-19 with two single-institution case-control studies through the University of California San Diego (UCSD) Health System. (2) Methods: This study included patients who tested positive for COVID-19 from 1 January to 30 September 2020 with serum 25-hydroxy-vitamin D (25(OH)D) measured within 180 days of diagnosis. Patients were separated based on whether 25(OH)D was measured before (

Indexed as

COVID-19Vitamin D DeficiencyCase-Control StudiesCOVID-19 TestingHumansVitamin DVitamin D25(OH)Dcase–control studyCOVID-19vitamin D

Identifiers

PMID35807937

DOI10.3390/nu14132757

PMCPMC9268980

OpenAlexW4283806288

What OpenQuestion holds

Textmetadata

LicenceCC BY

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.