The aim of the present study was to appraise the diagnostic efficacy of age , estimated glomerular filtration rate ( eGFR ) and ejection fraction ( AGEF ) score ( age/EF ( % ) +@ ( if eGFR was < @ ml min ( -@ ) @ m ( -@ ) ) ) as an predictor of CIAKI in patients with diabetes mellitus ( DM ) and concomitant chronic kidney disease ( CKD ) .