Figure 3
From: Investigating causality in the association between 25(OH)D and schizophrenia

Mendelian randomization analysis of the effect of genetic risk for schizophrenia on serum 25(OH)D levels.
Results from fixed effects inverse variance weighted meta-analysis. Weights for individuals SNPs ranged from 0.4 to 2.8%. Overall effect is in the positive direction (higher genetic risk for schizophrenia associated with higher 25(OH)D). Magnitude of effects from this analysis are not interpretable.