Table 1.
The characteristics of the total, CKD stage III+, normal eGFR groups in our study
| Parameters | Total group (N = 30,041) |
CKD stage III + - group (N = 1640) |
Normal eGFR (N = 12,963) |
P value | |
|---|---|---|---|---|---|
| Age (year) | mean (SD) | 41.7(11.9) | 53.1(9.2) | 38.3(11.7) | < 0.01 |
| < 40, n (%) | 13,844(46.1) | 172(10.5) | 7659(59.1) | ||
| ≥ 40, n (%) | 16,196(53.9) | 1467(89.5) | 5304(40.9) | ||
|
Gender, n (%) |
Male | 10,748(35.8) | 658(40.1) | 4769(36.8) | < 0.01 |
| Female | 19,293(64.2) | 982(59.9) | 8194(63.2) | ||
|
Marital status, n (%) |
Married | 24,930(83) | 1417(86.4) | 10,453(80.6) | < 0.01 |
| Single | 5111(17) | 223(13.6) | 2510(19.4) | ||
|
Education, n (%) |
Illiterate | 5505(18.3) | 455(27.7) | 2185(16.9) | < 0.01 |
| School | 16,454(54.8) | 871(53.1) | 7242(55.9) | ||
| Diploma, higher | 8079(26.9) | 314(19.1) | 3535(27.3) | ||
|
Ethnicity, n (%) |
Fars | 5558(18.5) | 364(22.3) | 1931(14.9) | < 0.01 |
| Arab | 14,699(49) | 755(46.2) | 74.3(57.2) | ||
| Bakhtiari | 6613(22.1) | 370(22.7) | 2494(19.3) | ||
| others | 3115(10.4) | 144(8.8) | 1119(8.6) | ||
|
Smoking, n (%) |
No | 26,734(89.2) | 1414(86.4) | 11,578(89.4) | < 0.01 |
| Yes | 3251(10.8) | 222(13.6) | 1370(10.6) | ||
|
Wealth score, n (%) |
Very low | 7513(25.2) | 324(20) | 3584(27.8) | < 0.01 |
| Low | 7390(24.7) | 403(24.8) | 3111(24.1) | ||
| Middle | 7983(26.7) | 478(29.4) | 3434(26.6) | ||
| High | 6978(23.4) | 419(25.8) | 2764(21.4) | ||
|
Physical activity n (%) |
Low | 9302(30) | 580(35.5) | 3974(30.7) | < 0.01 |
| Medium | 12,853(42.9) | 698(42.7) | 5491(42.5) | ||
| High | 7810(26.1) | 355(21.7) | 3462(26.8) | ||
|
DM, n (%) |
No | 25,372(84.6) | 1188(72.6) | 11,236(89.8) | < 0.01 |
| Yes | 4616(15.4) | 449(27.4) | 1713(13.2) | ||
|
HTN, n (%) |
No | 23,910(79.9) | 921(56.4) | 11,029(85.3) | < 0.01 |
| Yes | 6015(20.1) | 712(43.6) | 1901(14.7) | ||
|
IHD, n (%) |
No | 29,584(98.5) | 1582(96.5) | 12,828(99) | < 0.01 |
| Yes | 457(1.5) | 58(3.5) | 135(1) | ||
|
Hyperchol n (%) |
No | 17,589(58.5) | 816(49.8) | 8137(62.8) | < 0.01 |
| Yes | 12,452(41.5) | 824(50.2) | 4826(37.2) | ||
|
MS, n (%) |
No | 20,323(67.7) | 840(51.2) | 9447(72.9) | < 0.01 |
| Yes | 9718(32.3) | 800(48.8) | 3516(27.1) | ||
|
HDL n (%) |
< 40 mg/dl | 4873(16.2) | 333(20.3) | 2067(15.9) | < 0.01 |
| ≥ 40 mg/dl | 25,168(83.8) | 1307(79.7) | 10,896(84.1) | ||
| BMI (kg/m2), mean (SD) | 27.6 (5.3) | 28.6(5.1) | 27.1(5.5) | < 0.01 | |
| WC (cm), mean (SD) | 9217(14.6) | 96.9(14.1) | 90.4(14.8) | < 0.01 | |
| WHtR, mean (SD) | 0.57(0.09) | 0.6(0.09) | 0.55(0.09) | < 0.01 | |
| WHR mean (SD) | 0.89(0.08) | 0.93(0.08) | 0.88(0.08) | < 0.01 | |