Fig. 1

a The utility of the cut-off values of the uPCR and sensitivity, specificity, Se + Sp-1, and 1—Distance in the differentiation of uACR ≥ 30 mg/gCr in non-diabetic patients with G stages 1 to 3a according to dipstick proteinuria. Red: patients with proteinuria(-), Green: patients with proteinuria(-)( ±), Blue: patients with proteinuria(-)( ±)( +), Purple patients with proteinuria(-)( ±)( +)2( +),○: Sensitivity, □: Specificity, △: Se + Sp-1, ▽: 1—Distance. The solid vertical line indicates a CO (YI) of 0.07 g/gCr at dipstick proteinuria(-). The CO (YI) does not change even if more than a trace of proteinuria is added. The dotted vertical line indicates a CO (D) of 0.06 g/gCr at dipstick proteinuria(-). The CO (D) matches the CO (YI) when trace or more proteinuria is included. b The utility of the cut-off values of the uPCR and sensitivity, specificity, Se + Sp-1, and 1- Distance in the differentiation of uACR ≥ 30 mg/gCr in non-diabetic patients with G stages 3b to 4 according to dipstick proteinuria. Red: patients with proteinuria(-), Green: patients with proteinuria(-)( ±), Blue: patients with proteinuria(-)( ±)( +), Purple patients with proteinuria(-)( ±)( +)2,3( +),○: Sensitivity, □: Specificity, △: Se + Sp-1, ▽: 1—Distance. The solid vertical line indicates a CO (YI) of 0.10 g/gCr at dipstick proteinuria(-). The CO (YI) does not change even if dipstick proteinuria ( ±) or more is included. The dotted vertical line indicates a CO(D) of 0.07 g/gCr at dipstick proteinuria(-) and 0.09 g/gCr at proteinuria(-)( ±). The CO (D) matches the CO (YI) when dipstick proteinuria is (-) ( ±) ( +) or more. The results are shown in Table 2.