   0.0 (0.0--0.0)   0.0 (0.0--0.0)  Sensitivity, specificity, and positive likelihood ratio (00% confidence interval) for serum creatinine, cystatin C, and beta0-microglobulin to diagnose renal dysfunction (creatinine clearance estimation by Schwartz formula less than 00 ml/minute per 0.00 m^0^) are shown.  