Fig. 3

a The utility of the cut-off values of the sum of the three uPCRs and sensitivity, specificity, Se + Sp-1, and 1—Distance in the differentiation of normoalbuminuria and micro- and macroalbuminuria in non-diabetic patients with G stages 1 to 3a according to the three SuPDS (sum of the three urine protein dipstick scores). Red: SuPDS0, all three urine protein dipsticks were negative; Green: SuPDS0 or 0.5, all three urine protein dipsticks were negative, or two urine protein dipstick were negative and one urine protein dipstick was trace; Blue: SuPDS0-5.0. ○: Sensitivity, □: Specificity, △: Se + Sp-1, ▽: 1—Distance. The solid vertical line indicates that the CO (YI) of the sum of the three uPCRs with SuPDS0, 0 or 0.5, or 0–5.0 was 0.23 g/gCr. The dotted vertical lines indicate that the CO (D) of the sum of the three uPCRs with SuPDS0 was 0.18 g/gCr, that with SuPDS0 or 0.5 was 0.21 g/gCr. The CO (D) of the sum of the three uPCRs with SuPDS0-5.0 coincided with the CO (YI) at 0.23 g/gCr. b The utility of the cut-off values of the sum of the three uPCRs and the sensitivity, specificity, Se + Sp-1, and 1—Distance in the differentiation of normoalbuminuria and micro- and macroalbuminuria in non-diabetic patients with G stage 3b to 4 according to the three SuPDS. Red: SuPDS0; Green: SuPDS0 or 0.5; Blue: SuPDS0-6.0. ○: Sensitivity, □: Specificity, △: Se + Sp-1, ▽: 1—Distance. The solid vertical line indicates that the CO (D and YI) of the sum of the three uPCRs with SuPDS0, 0 or 0.5, or 0–6.0 was 0.23 g/gCr. The results are shown in Table 4