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 ( % ) +1 ( if eGFR was < 60 ml min ( -1 ) 1.73 m ( -2 ) ) ) as an predictor of CIAKI in patients with diabetes mellitus ( DM ) and concomitant chronic kidney disease ( CKD ) .