Fig. 1From: Genetically predicted triglycerides mediate the relationship between type 2 diabetes Mellitus and intervertebral disc degenerationDiagram of analytical relationships. (A) The total influence between T2DM and IVDD. ‘a’ indicates the total influence of T2DM on IVDD. ‘b’ indicates the total influence of IVDD on T2DM. (B) Diagram of direct and indirect impacts. ‘c’ indicates the effect of T2DM on TG. ‘d’ indicates the effect of TG on IVDD (indirect impact = c × d). ‘e’ indicates direct effects = a - c × d. Mediation ratio = c × d / aBack to article page