表 2. Laboratory observation indicators of subgroups of different stages of DKD.

DKD各亚组间实验室观察指标

Indicator	Stage 2 (n=60)	Stage 3 (n=61)	Stage 4 (n=18)	Stage 5 (n=12)	P
The abbreviations are explained in the note to Table 1. a P<0.05, a* P<0.05, vs. stage 2; b P<0.05, b* P<0.05, vs. stage 3. a*, b* are P values after adjustment for age, sex, duration of diabetes, serum albumin, and glucose.
(Male/female)/case	31/29	34/27	14/4	9/3	0.143
Age/yr.,	63.23±10.78	66.71±13.41	70.16±11.53	69.83±5.52	0.073
Course of disease/year, median (P25, P75)	9.50 (6.00, 15.00)	10.00 (9.00, 15.50)	15.00 (10.00, 17.00)	16.00 (10.00, 20.00)a	0.004
HbA1c/%, median (P25, P75)	8.35 (6.93, 10.8)	7.30 (6.30, 9.15)	6, 45 (5.78, 8.38)a	8.35 (6.73, 10.00)	0.004
FPG/(mmol/L), median (P25, P75)	7.92 (6.23, 10.48)	7.60 (5.95, 9.97)	6.27 (5.77, 8.32)	10.54 (7.16, 15.20)	0.070
Alb/(g/L), median (P25, P75)	42.30 (38.48, 45.00)	40.00 (35.00, 44.00)	38.10 (33.00, 42.90)	36.65 (31.90, 40.53)a	0.008
C3-epi/(ng/mL), median (P25, P75)	1.40 (1.10, 1.78)	1.44 (1.08, 2.06)	1.04 (0.92, 1.35)b*	0.85 (0.69, 1.19)a*, b*	0.001
25(OH)D2/(ng/mL), median (P25, P75)	0.83 (0.56, 1.37)	0.96 (0.53, 2.09)	0.68 (0.48, 1.01)	0.81 (0.38, 1.19)	0.275
25(OH)D3/(ng/mL), median (P25, P75)	18.22 (13.20, 22.68)	17.79 (11.87, 23.50)	12.87 (10.09, 16.27)a*, b*	10.64 (7.30, 15.63)a*, b*	0.001
t-25(OH)D/(ng/mL), median (P25, P75)	19.36 (15.08, 23.65)	19.44 (13.17, 26.59)	13.60 (10.56, 17.08)a, b	11.84 (7.92, 16.77)a, b	<0.001
25(OH)D2/25(OH)D3 (median [P25, P75])	0.05 (0.03, 0.88)	0.07 (0.03, 0.16)	0.55 (0.04, 0.85)	0.65 (0.05, 0.10)	0.628
C3-epi/t-25(OH)D (median [P25, P75])	0.08 (0.06, 0.09)	0.07 (0.06, 0.10)	0.09 (0.07, 0.10)	0.06 (0.05, 0.09)	0.701
C3-epi/AVitD3 (median [P25, P75])	0.08 (0.07, 0.10)	0.08 (0.07, 0.10)	0.09 (0.08, 0.11)	0.09 (0.63, 0.11)	0.641
AVitD3/(ng/mL), median (P25, P75)	18.72 (13.61, 22.91)	18.21 (12.35, 24.70)	13.13 (10.24, 16.50)a	11.13 (7.51, 15.98)a, b	<0.001