Figure 1
From: Vitamin D and breast cancer: interpreting current evidence
Vitamin D and total mortality in a meta-analysis of randomized controlled trials. Meta-analysis of randomized, controlled trials evaluating supplementation with vitamin D alone or in combination with calcium compared with placebo or no intervention on total mortality. The size of the box indicates the number of deaths, and the horizontal lines indicate the 95% confidence interval (CI). Adapted with permission from Autier and Gandini [73]. RR, relative risk.