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The Relationship Between Vitamin D Levels, Inflammatory Parameters and Disease Severity of COVID-19 Infection

The Relationship Between Vitamin D Levels, Inflammatory Parameters and Disease Severity of COVID-19 Infection: A Retrospective Study

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04945577
Enrollment
300
Registered
2021-06-30
Start date
2020-07-01
Completion date
2020-08-01
Last updated
2021-06-30

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Covid19, Vitamin D Deficiency

Keywords

COVID-19, Vitamin D, Disease severity, Inflammatory markers

Brief summary

Vitamin D deficiency increases the susceptibility to respiratory virus infections and the severity of infections. Inflammation plays a key role in pathogenesis in COVID19 while identifying clinical course and prognosis COVID19.The aim of this study was to determine the relationship between 25OH vitamin D levels, inflammatory laboratory parameters of neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), C-reactive protein (CRP) levels and disease severity of COVID19 infection.

Detailed description

In this retrospective study 300 patients diagnosed with COVID19 were included. According to clinical classification of cases with COVID19 the patients were divided into three groups; mild (Group1), moderate (Group2) and severe/critical (Group3). The 25OH vitamin D values below 20 ng/ml were defined as deficiency, 21-29 ng/ml were defined as insufficiency, and 30 ng/ml and above were defined as normal. Patients' age, gender, comorbid diseases and laboratory values were recorded

Interventions

DIAGNOSTIC_TESTInflammatory Parameters

Laboratory measurement of patient's inflammatory status in unit of % and mg/dl

OTHER25 OH Vitamin D Level

Laboratory measurement of patient's 25 OH vitamin D level in unit of ng/dl

Sponsors

Fatih Sultan Mehmet Training and Research Hospital
Lead SponsorOTHER

Study design

Observational model
OTHER
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
16 Years to 97 Years

Inclusion criteria

* The study included 300 polymerase chain reaction (PCR) test positive patients and whose 25-OH vitamin D levels were measured in the last 6 months

Exclusion criteria

* Patients with COVID-19 whose 25-OH vitamin D levels were not measured in the last 6 months before the COVID-19 diagnosis were excluded from the study

Design outcomes

Primary

MeasureTime frameDescription
25-OH vitamin D1 daylaboratory measurement in unit of ng/ml
White blood cell count1 daylaboratory measurement in unit of x103/uL
neutrophil count1 daylaboratory measurement in unit of x103/uL
neutrophil ratio1 daylaboratory measurement in unit of %
lymphocyte count1 dayx103/uL
lymphocyte ratio1 daylaboratory measurement in unit of %
platelet count1 daylaboratory measurement in unit of x103/uL
hemoglobin count1 daylaboratory measurement in unit of g/dl
C-reactive protein levels1 daylaboratory measurement in unit of mg/dL
neutrophil to lymphocyte ratio1 daylaboratory measurement in unit of %
platelet to lymphocyte ratio1 daylaboratory measurement in unit of %

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026