Figure 3From: Vitamin D deficiency as a risk factor for infection, sepsis and mortality in the critically ill: systematic review and meta-analysisForest plot of studies comparing deficient vitamin D levels with sufficient vitamin D levels on 30Â day-mortality (univariate analysis). CI, confidence interval; IV, inverse variance; Vit D-, deficient vitamin D level; Vit D+, sufficient vitamin D level.Back to article page