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All Studies   Meta Analysis   Recent: 
0 0.5 1 1.5 2+ Severe case 89% Improvement Relative Risk Hospitalization time 87% Case 24% c19early.org/d Demir et al. Vitamin D for COVID-19 Sufficiency Favors vitamin D Favors control
Vitamin D deficiency is associated with COVID‐19 positivity and the severity of the disease
Demir et al., Journal of Medical Virology, doi:10.1002/jmv.26832
29 Jan 2021    Source   PDF   Share   Tweet
Retrospective cohort study of 487 patients finding that lower vitamin D levels is associated with more severe cases as measured by affected lung segments and increased hospitalization time for COVID-19 positive patients, and that lower vitamin D levels increases COVID-19 PCR+ cases.
risk of severe case, 89.3% lower, RR 0.11, p < 0.001, high D levels 13, low D levels 99, ratio of the mean number of affected lung segments, >30ng/ml vs. <=10ng/mL.
hospitalization time, 87.1% lower, relative time 0.13, p < 0.001, high D levels 13, low D levels 99, >30ng/ml vs. <=10ng/mL.
risk of case, 24.2% lower, RR 0.76, p = 0.18, high D levels 13 of 31 (41.9%), low D levels 99 of 179 (55.3%), NNT 7.5, >30ng/ml vs. <=10ng/mL.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Demir et al., 29 Jan 2021, retrospective, Turkey, peer-reviewed, 3 authors.
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