Table 2 Demographic and clinical characteristics of derivation cohort by chronic kidney disease category
Variables | Normal group | Chronic kidney disease group | P value |
|---|---|---|---|
n | 2040 | 234 | |
Age, years | 58.1 ± 8.5 | 60.1 ± 8.9 | < 0.001 |
Men, n (%) | 934 (45.8%) | 112 (47.8%) | 0.006 |
BMI, kg/m2 | 26.3 ± 3.3 | 27.2 ± 3.7 | < 0.001 |
SBP, mmHg | 129.0 ± 18.2 | 133.2 ± 19.0 | < 0.001 |
DBP, mmHg | 80.0 ± 10.6 | 81.9 ± 11.5 | < 0.001 |
TC, mmol/L | 4.9 (4.2, 5.7) | 5.2 (4.5, 6.0) | < 0.001 |
TG, mmol/L | 2.5 (2.0, 3.1) | 2.8 (2.4, 3.5) | < 0.001 |
HDL, mmol/L | 1.3 (1.0, 1.5) | 1.2 (1.0, 1.4) | 0.001 |
LDL, mmol/L | 2.9 (2.3, 3.5) | 3.3 (2.7, 3.9) | < 0.001 |
FBG, mmol/L | 2.8 (2.4, 3.1) | 3.4 (2.7, 3.8) | < 0.001 |
HbA1c, % | 5.0 (4.7, 5.4) | 5.4 (4.9, 5.9) | < 0.001 |
C-reactive protein, mg/L | 1.0 (0.5, 2.0) | 1.0 (0.5, 2.0) | 0.127 |
eGFR, mL/min/1.73m2 | 90.1 (82.9, 105.4) | 51.0 (47.5, 56.3) | < 0.001 |
Uric acid, mg/dl | 3.5 (3.1, 4.2) | 5.1 (4.5, 5.8) | < 0.001 |
Hemoglobin, g/dl | 14.5 (13.6, 15.4) | 13.8 (12.7, 15.0) | 0.001 |
Sleep duration, h | 7.0 (6.0, 8.0) | 7.0 (6.0, 7.0) | 0.023 |
Education status, n (%) | |||
Illiterate | 583 (28.8%) | 77 (32.9%) | 0.024 |
Primary school and below | 852 (41.8%) | 100 (42.7%) | |
Middle school and above | 605 (29.4%) | 57 (24.4%) | |
Residence, n (%) | 0.042 | ||
Rural | 1367 (67.0%) | 162 (69.2%) | |
Urban | 673 (33.0%) | 72 (30.8%) | |
Marital status, n (%) | 0.034 | ||
Single | 214 (10.5%) | 31 (13.2%) | |
Married/cohabiting | 1826 (89.3%) | 203 (86.8%) | |
Smoking status, n (%) | < 0.001 | ||
Non | 1779 (87.2%) | 199 (85.0%) | |
Current | 261 (12.8%) | 35 (15.0%) | |
Drinking status, n (%) | 0.010 | ||
Non | 1597 (78.3%) | 181 (77.4%) | |
Current | 443 (21.7%) | 53 (22.6%) |