CST3 and dementia: Our findings were consistent with previous studies that found a positive association between poor kidney functionand risk of dementia and we have demonstrated that the association between eGFR and dementia was robust whether using the creatinine equation (CKD-EPI 2009), cystatin C equation (CKD-EPI 2012), or creatinine–cystatin C equation (CKD-EPI 2012), which is comparable to a recent study by Wu et al. [44] using data from the UK Biobank.