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0 0.5 1 1.5 2+ Mortality 70% Improvement Relative Risk Ventilation 75% Progression 62% Oxygen therapy 27% Vitamin D for COVID-19  Bogomaz et al.  Sufficiency Are vitamin D levels associated with COVID-19 outcomes? Retrospective 70 patients in Ukraine Lower mortality (p=0.24) and ventilation (p=0.23), not sig. Bogomaz et al., Canadian J. Respirator.., Aug 2023 Favors vitamin D Favors control

Vitamin D as a predictor of negative outcomes in hospitalized COVID-19 patients: An observational study

Bogomaz et al., Canadian Journal of Respiratory Therapy, doi:10.29390/001c.87408
Aug 2023  
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Retrospective 70 hospitalized COVID-19 patients in Iran, showing higher mortality, ventilation, and need for respiratory support with low vitamin D levels, all without statistical significance. Adjusted results are provided only for respiratory support.
This is the 186th of 187 COVID-19 sufficiency studies for vitamin D, which collectively show higher levels reduce risk with p<0.0000000001 (1 in 11 vigintillion).
risk of death, 70.0% lower, RR 0.30, p = 0.24, high D levels (≥30ng/ml) 1 of 28 (3.6%), low D levels (<30ng/ml) 5 of 42 (11.9%), NNT 12, inverted to make RR<1 favor high D levels (≥30ng/ml), odds ratio converted to relative risk.
risk of mechanical ventilation, 75.0% lower, RR 0.25, p = 0.23, high D levels (≥30ng/ml) 1 of 28 (3.6%), low D levels (<30ng/ml) 6 of 42 (14.3%), NNT 9.3.
risk of progression, 62.5% lower, RR 0.38, p = 0.30, high D levels (≥30ng/ml) 2 of 28 (7.1%), low D levels (<30ng/ml) 8 of 42 (19.0%), NNT 8.4, critical case.
risk of oxygen therapy, 27.0% lower, RR 0.73, p = 0.24, high D levels (≥30ng/ml) 10 of 28 (35.7%), low D levels (<30ng/ml) 28 of 42 (66.7%), NNT 3.2, adjusted per study, inverted to make RR<1 favor high D levels (≥30ng/ml), odds ratio converted to relative risk, multivariable.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Bogomaz et al., 24 Aug 2023, retrospective, Ukraine, peer-reviewed, median age 62.0, 2 authors.
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This PaperVitamin DAll
Vitamin D as a predictor of negative outcomes in hospitalized COVID-19 patients: An observational study
Volodymyr Bogomaz, Sofiia Shatylo
Canadian Journal of Respiratory Therapy, doi:10.29390/001c.87408
Introduction Serum vitamin D deficiency is thought to be associated with worse clinical outcomes in COVID-19 patients. Methods This single-centre observational study evaluated the association between serum vitamin D levels and negative outcomes in hospitalized COVID-19 patients in Ukraine. We included hospitalized patients with COVID-19 confirmed by PCR and serum vitamin D measurement on admission. Patients were divided into two groups based on their serum vitamin D level: with adequate vitamin D (≥ 30 ng/ml) and with low vitamin D (<30 ng/ ml). Outcomes such as death and the need for respiratory support were recorded. Results A total of 70 patients were included. The gender; severity of COVID-19; comorbidities such as hypertension, diabetes mellitus type 2, obesity; type of respiratory support, and the length of hospital stay did not differ in both groups. Patients with low serum vitamin D levels have higher C-reactive protein levels 26.14 mg/L [Q1, Q3: 16.61, 57.79] compared to another group 13.43 mg/L [Q1, Q3: 8.84, 27.58]. Low vitamin D level was associated with an increased risk of respiratory support need OR [Odds ratio] 2.925 [95% CI, 1.0839 to 7.8931]. However, after adjustment for age, gender, and common comorbidities, it did not remain significant. Vitamin D serum levels did not significantly differ in patients who died during hospitalization compared to those who survived. Conclusion The role of vitamin D as a sole predictor of mortality and respiratory support appears to be overestimated. Low vitamin D levels may have a greater impact on COVID-19 outcomes in hospitalized elderly patients with comorbidities.
COMPETING INTERESTS The authors have no conflicts of interest to declare. FUNDING This study did not receive any specific grant from public, commercial or not-for-profit funding agencies. CONTRIBUTORS The authors confirm their contribution to the paper: study conception and design: All patients and/or their representatives gave informed consent. For analysis, we used datasets which were properly anonymized. AI STATEMENT The authors confirm no generative AI or AI-assisted technology was used to generate content.
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