Fig. 5From: Assessment of research waste part 1: an exemplar from examining study design, surrogate and clinical endpoints in studies of calcium intake and vitamin D supplementationCumulative meta-analyses of the effect of vitamin D supplements (used as monotherapy, such that treatment groups only differed by vitamin D use) on lumbar spine (left panel) and femoral neck bone mineral density (BMD) (right panel) in randomised controlled trials at 1–2 yearsBack to article page