Table 1. Differences in demographic and clinical characteristics between the NDN and DN groups.
| Demographic characteristics | n (%) | ||
| NDN | DN | Total (n=3489) | |
| Sex | |||
| Male | 1226 (44.0) | 336 (47.9) | 1562 (44.8) |
| Female | 1562 (56.0) | 365 (52.1) | 1927 (55.2) |
| Age(years) | |||
| <50 | 57 (2.0) | 6 (0.9) | 63 (1.8) |
| 50-69 | 2102 (75.4) | 486 (69.3) | 2588 (74.2) |
| ≥70 | 629 (22.6) | 209 (29.8) | 838 (24.0) |
| Disease duration (years) | |||
| <5 | 795 (28.5) | 148 (21.1) | 943 (27.0) |
| 5-9 | 791 (28.4) | 187 (26.7) | 978 (28.0) |
| 10-14 | 589 (21.1) | 166 (23.7) | 755 (21.6) |
| 15-19 | 378 (13.6) | 119 (17.0) | 497 (14.2) |
| 20-24 | 157 (5.6) | 53 (7.6) | 210 (6.0) |
| 25-29 | 50 (1.8) | 14 (2.0) | 64 (1.8) |
| ≥30 | 28 (1.0) | 14 (2.0) | 42 (1.2) |
| Lifestyle habits | |||
| Smoking | |||
| No | 2070 (74.2) | 527 (75.2) | 2597 (74.4) |
| Yes | 718 (25.8) | 174 (24.8) | 892 (25.6) |
| Consuming alcohol | |||
| No | 2078 (74.5) | 531 (75.7) | 2609 (74.8) |
| Yes | 710 (25.5) | 170 (24.3) | 880 (25.2) |
| Physical examination results | |||
| SBP (mmHg) | |||
| <130 | 713 (25.6) | 72 (10.3) | 785 (22.5) |
| 130-139 | 585 (21.0) | 111 (15.8) | 696 (19.9) |
| ≥140 | 1490 (53.4) | 518 (73.9) | 2008 (57.6) |
| DBP (mmHg) | |||
| <80 | 1252 (45.1) | 220 (31.4) | 1472 (42.0) |
| 80-89 | 1013 (36.3) | 286 (40.8) | 1299 (37.2) |
| ≥90 | 523 (18.8) | 195 (27.8) | 718 (20.6) |
| BMI (kg/m2) | |||
| <24 | 1038 (37.2) | 161 (23.0) | 1199 (34.4) |
| 24-27.99 | 1248 (44.8) | 340 (48.5) | 1588 (45.5) |
| ≥28 | 502 (18.0) | 200 (28.5) | 702 (20.1) |
| WHR | |||
| <0.9 | 1269 (45.5) | 251 (35.8) | 1520 (43.6) |
| ≥0.9 | 1519 (54.5) | 450 (64.2) | 1969 (56.4) |
| Biochemical tests result characteristics | |||
| FBG (mmol/L) | |||
| <6.1 | 682 (24.5) | 26 (3.7) | 708 (20.3) |
| 6.1-6.9 | 554 (19.9) | 126 (18.0) | 680 (19.5) |
| >6.9 | 1552 (55.7) | 549 (78.3) | 2101 (60.2) |
| PBG (mmol/L) | |||
| <7.8 | 593 (21.3) | 64 (9.1) | 657 (18.8) |
| 7.8-11.0 | 748 (26.8) | 157 (22.4) | 905 (25.9) |
| >11.0 | 1447 (51.9) | 480 (68.5) | 1927 (55.2) |
| HbA1c (%) | |||
| <6 | 467 (16.8) | 46 (6.6) | 513 (14.7) |
| 6-6.9 | 1054 (37.8) | 229 (32.7) | 1283 (36.8) |
| >6.9 | 1267 (45.4) | 426 (60.8) | 1693 (48.5) |
| TC (mmol/L) | |||
| <4.5 | 1091 (39.1) | 217 (31.0) | 1308 (37.5) |
| ≥4.5 | 1697 (60.9) | 484 (69.0) | 2181 (62.5) |
| TGs (mmol/L) | |||
| <1.7 | 1615 (57.9) | 317 (45.2) | 1932 (55.4) |
| ≥1.7 | 1173 (42.1) | 384 (54.8) | 1557 (44.6) |
| LDL (mmol/L) | |||
| <1.8 | 1889 (67.8) | 451 (64.3) | 2340 (67.1) |
| ≥1.8 | 899 (32.2) | 250 (35.7) | 1149 (32.9) |
| HDL (mmol/L) | |||
| <1.0 | 104 (3.7) | 14 (2.0) | 118 (3.4) |
| ≥1.0 | 2684 (96.3) | 687 (98.0) | 3371 (96.6) |
| BUN (mmol/L) | |||
| <3.2 | 110 (3.9) | 4 (0.6) | 114 (3.3) |
| 3.2-7.1 | 2300 (82.5) | 549 (78.3) | 2849 (81.7) |
| >7.1 | 378 (13.6) | 148 (21.1) | 526 (15.1) |
| SCR (μmol/L) | |||
| <44 | 100 (3.6) | 26 (3.7) | 126 (3.6) |
| 44-106 | 2646 (94.9) | 645 (92.0) | 3291 (94.3) |
| >106 | 42 (1.5) | 30 (4.3) | 72 (2.1) |
| UA (μmol/L) | |||
| <150 | 22 (0.8) | 0 (0) | 22 (0.6) |
| 150-440 | 2602 (93.3) | 681 (97.1) | 3283 (94.1) |
| >440 | 164 (5.9) | 20 (2.9) | 184 (5.3) |
| UCR (mmol/L) | |||
| <5.3 | 540 (19.4) | 143 (20.4) | 683 (19.6) |
| 5.3-18.0 | 2166 (77.7) | 543 (77.5) | 2709 (77.6) |
| >18.0 | 82 (2.9) | 15 (2.1) | 97 (2.8) |
| UMA (mg/L) | |||
| <30 | 2522 (90.5) | 88 (12.6) | 2610 (74.8) |
| ≥30 | 266 (9.5) | 613 (87.4) | 879 (25.2) |
| ACR (mg/g) | |||
| <30 | 2788 (100) | 0 (0) | 2788 (79.9) |
| 30-300 | 0 (0) | 676 (96.4) | 676 (19.4) |
| ≥300 | 0 (0) | 25 (3.6) | 25 (0.7) |