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0 0.5 1 1.5 2+ Mortality 48% Improvement Relative Risk Vitamin D for COVID-19  Tehrani et al.  Sufficiency Are vitamin D levels associated with COVID-19 outcomes? Retrospective 205 patients in Iran Lower mortality with higher vitamin D levels (not stat. sig., p=0.065) Tehrani et al., Clinical Nutrition, Jan 2021 Favors vitamin D Favors control

Evaluation of vitamin D levels in COVID-19 patients referred to Labafinejad hospital in Tehran and its relationship with disease severity and mortality

Tehrani et al., Clinical Nutrition, doi:10.1016/j.clnesp.2021.01.014
Jan 2021  
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Retrospective 205 patients in Iran, showing higher mortality with vitamin D deficiency, not quite reaching statistical significance.
This is the 44th 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, 47.5% lower, RR 0.52, p = 0.07, high D levels 34 of 180 (18.9%), low D levels 9 of 25 (36.0%), NNT 5.8, >10ng/ml.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Tehrani et al., 25 Jan 2021, retrospective, Iran, peer-reviewed, 5 authors.
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Evaluation of vitamin D levels in COVID-19 patients referred to Labafinejad hospital in Tehran and its relationship with disease severity and mortality
Shabnam Tehrani, Neda Khabiri, Hamideh Moradi, Mina Sadat Mosavat, Seyyed Saeed Khabiri
Clinical Nutrition ESPEN, doi:10.1016/j.clnesp.2021.01.014
Background and aims: Novel Coronavirus (COVID-19) first appeared in China in late 2019 which was rapidly spread worldwide. As the COVID-19 pandemic continues to spread, it is crucial to determine the prognostic factors contributing to the development of severe disease and higher mortality. Herein we aimed to evaluate the correlation between the severity and prognosis of patients with COVID 19 with serum 25(OH)D levels. Method: This descriptive retrospective study was performed from March to April 2020 at a referral center for patients with COVID-19, Tehran, Iran. The data collection was performed by a checklist consisting of the demographic features and laboratory assessments consisted of serum 25(OH)D were evaluated and recorded. And investigate the relationship between serum 25(OH)D and clinical outcomes of patients. Result: 205 patients with a mean age of 59.71 years were enrolled. Our findings did not reveal a significant difference in mean levels of vitamin between improved (34.09) and deceased patients (34.54). However, in patients with severe disease, there was a considerable difference in levels of vitamin D in improved and deceased patients (P.value: 0.021). According to our results, the mortality rate was slightly higher in men (odds ratio:2.2). Furthermore, the mean age (64.20 vs. 58.51) and the presence of at least two comorbidities (odds ratio: 2.40) were significantly higher in deceased patients. Conclusion: In this study, we did not reveal a statistical difference in mean levels of vitamin D and the outcome of patients with COVID-19. We concluded that in patients with severe disease, vitamin D deficiency could affect the course of the disease and mortality, especially in comorbidity and older people.
Declaration of competing interest The authors did not declare any conflict of interest. This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
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