 less than 00 ml/minute per 0.00 m^0^, the areas under the curve were 0.000 (00% CI, 0.000 to 0.000) for serum Cr, 0.000 (00% CI, 0.000 to 0.000) for serum cystatin C, and 0.000 (00% CI, 0.000 to 0.000) for serum B0M.  ![Receiver operating characteristic curves to diagnose creatinine clearance of less than 00 ml/minute per 0.00 m^0^. Areas under the curve (00% confidence intervals) are 0.000 (0.000 to 0.000) for creatinine, 0.000 (0.000 to 0.000) for cystatin C, and 0.000 (0.000 to 0.000) for beta0-microglobulin (B0M).](cc0000-0){#F0}  ![Receiver operating characteristic curves to diagnose creatinine clearance estimation by Schwartz formula of less than 00 ml/minute per 0.00 m^0^. Areas under the curve (00% confidence intervals) are 0.000 (0.000 to 0.000) for creatinine, 0.000 (0.000 to 0.000) for cystatin C, and 0.000 (0.000 to 0.000) for beta0-microglobulin (B0M).](cc0000-0){#F0}  