Table 2.

uACR, uPCR and uPCR/uACR in patients with and without diabetes mellitus according to GFR category

GFR category	n	uACR (mg/gCr)	uACR undetected	uPCR (g/gCr)	uPCR undetected	uPCR/uACR (g/gCr)/(g/gCr)
Non-diabetes mellitus
G1	15	48.2 ± 29.8*	0	0.076 ± 0.057	3(20.0)	1.53 ± 0.94*
G2	141	71.6 ± 95.8	1(0.7)	0.112 ± 0.124	9(6.4)	2.86 ± 3.76d
G3a	219	55.8 ± 75.9	0	0.102 ± 0.117	19(8.3)	2.91 ± 3.12
G3b	132	74.4 ± 82.4	0	0.120 ± 0.116*	8(6.1)	2.51 ± 2.47
G4	84	77.0 ± 114.3**	0	0.150 ± 0.198c1*	5(6.0)	3.14 ± 3.15*

GFR category	n	uACR (mg/gCr)	uACR undetected	uPCR (mg/gCr)	uPCR undetected	uPCR/uACR (g/gCr)/(g/gCr)
Diabetes mellitus
G1	36	31.6 ± 28.6	0	0.072 ± 0.075	2(5.6)	3.04 ± 2.60
G2	135	37.4 ± 35.3	0	0.074 ± 0.064	11(8.1)	2.67 ± 2.05
G3a	78	52.7 ± 62.8	0	0.103 ± 0.105	5(5.7)	2.56 ± 2.04
G3b	48	87.6 ± 83.4abc1	0	0.168 ± 0.142abc1	0	2.44 ± 1.56
G4	21	125.5 ± 97.3abc2	0	0.180 ± 0.119abc2	0	1.91 ± 1.12

Data are shown as the mean ± standard deviation. Undetected uACR and uPCR were regarded as 0 mg/gCr and 0/gCr, respectively

uACR urinary albumin-to-creatinine ratio; uPCR, urinary protein-to-creatinine ratio; GFR, glomerular filtration rate

*p < 0.05, **p < 0.01 vs. diabetic patients by the Mann–Whitney's U test

^ap < 0.01 vs. G1

^bp < 0.01 vs. G2

^c1p < 0.05 vs. C3a

^c2p < 0.01 vs. C3a by the Steel–Dwass test

^dOne patient with undetected albuminuria was excluded