CST3 and diabetes mellitus: As for the analysis of baseline values of cystatin C and incident diabetes adding eGFR-CG on top of model 2 each 1 SD change of GFR showed no significant association with incident diabetes (OR 0.95 (0.80–1.14), p = 0.601 and baseline cystatin C remained not associated with incident diabetes (OR 0.99 (0.86–1.13), p = 0.835.