0
0.5
1
1.5
2+
Case
78%
Improvement
Relative Risk
Vitamin D for COVID-19 Katz et al. Sufficiency
Are vitamin D levels associated with COVID-19 outcomes?
Retrospective 133,125 patients in the USA
Fewer cases with higher vitamin D levels (p=0.001)
c19early.org
Katz et al., Nutrition, December 2020
Favors vitamin D
Favors control