Analysis of 191,779 patients in the US finding COVID-19 positivity strongly and inversely associated with circulating 25(OH)D levels. The relationship persists across latitudes, races/ethnicities, gender, and age ranges.
COVID-19 adjusted odds ratio OR 0.984 per ng/mL increment,
p<0.001). The decrease in positivity rate appeared to plateau as values approached 55 ng/mL.
Patients with high D levels (>55 ng/mL) compared to patients with very low D levels (<20 ng/mL) have a much lower risk of COVID-19 cases, with unadjusted RR 0.47,
p<0.001.
risk of case, 53.0% lower, RR 0.47, p < 0.001, high D levels 12,321, low D levels 39,190, >55 ng/mL vs. <20 ng/mL.
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Kaufman et al., 9/17/2020, retrospective, population-based cohort, USA, North America, peer-reviewed, median age 54.0, 5 authors.