Fig. 3From: Randomized supplementation of 4000 IU vitamin D3 daily vs placebo on the prevalence of anemia in advanced heart failure: the EVITA trialTrend analysis on hemoglobin concentrations in the vitamin D (n = 85) and placebo (n = 87) groups show significant time effects (P < 0.001), but no group differences (P = 0.91) or time x group interactions (P = 0.75). Data are presented as mean and 95% confidence intervalBack to article page