CST3 and chronic kidney disease: The aims of this study were to determine the association of reduced kidney function as measured by CKD-EPI creatinine, CKD-EPI cystatin C and CKD-EPI creatinine-cystatin C equations and all-cause mortality and CVD events and also to assess the accuracy of these newly derived cystatin C-based eGFR equations in the prediction of clinical events in a cohort of elderly women mainly without prevalent CKD and with two-thirds of women with eGFR above 60 mL/min/1.73 m2.