Fig. 3
From: Circulating Vitamin D levels status and clinical prognostic indices in COVID-19 patients

The histograms highlighted that patients that display lower levels of Vitamin D had lower SOFA (a), LIPI (b) scores and TSS (c) values. The chi-square test or Fisher’s exact test was used to examine categorical data (SOFA; LIPI and CT score). *p < 0.03. **p < 0.01