We explored the effect of randomization to atorvastatin @ mg/d or placebo on the change in estimated glomerular filtration rate ( eGFR ; using the @-component Modification of Diet in Renal Disease Study equation ) in SPARCL subjects ( n = @ ) with ( eGFR , < @ mL/min per @ m@ ; n = @ ) and without ( eGFR , @ mL/min per @ m@ ; n = @ ) chronic kidney disease overall and by glycemic status at baseline .