Table 1 Baseline characteristics of study population
|  | Male (n = 13,410) | Female (n = 16,106) | Total (n = 29,516) | ||||
|---|---|---|---|---|---|---|---|
eGFR≥ 60 | eGFR< 60 | P | eGFR≥ 60 | eGFR< 60 | P |  | |
Age (year) | |||||||
 35~ 44 | 2942 (23.11) | 17 (2.49) | < 0.0001 | 3953 (25.99) | 23 (2.57) | < 0.0001 | 6935 (23.50) |
 45~ 54 | 3001 (23.58) | 40 (5.87) |  | 3950 (25.97) | 61 (6.82) |  | 7052 (23.89) |
 55~ 64 | 2938 (23.08) | 95 (13.93) |  | 3453 (22.70) | 144 (16.11) |  | 6630 (22.46) |
 65~ 74 | 2476 (19.45) | 237 (34.75) |  | 2566 (16.87) | 295 (33.00) |  | 5574 (18.88) |
  ≥ 75 | 1371 (10.77) | 293 (42.96) |  | 1290 (8.48) | 371 (41.50) |  | 3325 (11.27) |
Urban | 5870 (46.12) | 305 (44.72) | 0.4760 | 6636 (43.62) | 405 (45.30) | 0.3250 | 13,216 (44.78) |
Region | |||||||
 Eastern | 5464 (42.93) | 302 (44.28) | < 0.0001 | 6549 (43.05) | 339 (37.92) | < 0.0001 | 12,654 (42.87) |
 Middle | 5200 (40.85) | 220 (32.26) |  | 5814 (38.22) | 283 (31.66) |  | 11,517 (39.02) |
 Western | 2064 (16.22) | 160 (23.46) |  | 2849 (18.73) | 272 (30.43) |  | 5345 (18.11) |
Higher Education (>  12 years) | 957 (7.52) | 46 (6.74) | 0.4540 | 847 (5.57) | 24 (2.68) | < 0.0001 | 1874 (6.35) |
Married | 11,640 (91.47) | 547 (80.21) | < 0.0001 | 13,263 (87.19) | 565 (63.20) | < 0.0001 | 26,015 (88.14) |
Smoking status | 5861 (46.05) | 226 (33.14) | < 0.0001 | 516 (3.39) | 42 (4.70) | 0.0380 | 6645 (22.51) |
Alcohol use | 4946 (38.86) | 157 (23.02) | < 0.0001 | 541 (3.56) | 28 (3.13) | 0.5040 | 5672 (19.22) |
Hypertension | 5184 (40.73) | 440 (64.52) | < 0.0001 | 5603 (36.83) | 589 (65.88) | < 0.0001 | 11,816 (40.03) |
DM | 1281 (10.06) | 114 (16.72) | < 0.0001 | 1298 (8.53) | 152 (17.00) | < 0.0001 | 2845 (9.64) |
MI | 97 (0.76) | 17 (2.49) | < 0.0001 | 93 (0.61) | 15 (1.68) | < 0.0001 | 222 (0.75) |
Stroke | 340 (2.67) | 54 (7.92) | < 0.0001 | 266 (1.75) | 40 (4.47) | < 0.0001 | 700 (2.37) |
Weight (kg) | 67.61 ± 11.19 | 65.65 ± 11.90 | < 0.0001 | 59.45 ± 9.99 | 57.83 ± 10.78 | < 0.0001 | 63.05 ± 11.36 |
BMI (kg/m2) | 24.40 ± 3.36 | 24.28 ± 3.64 | 0.3585 | 24.70 ± 3.64 | 24.80 ± 4.03 | 0.4103 | 24.56 ± 3.53 |
WC (cm) | 85.43 ± 9.93 | 85.73 ± 10.77 | 0.4479 | 82.31 ± 10.04 | 84.75 ± 11.34 | < 0.0001 | 83.81 ± 10.17 |
WHtR | 0.51 ± 0.06 | 0.52 ± 0.06 | 0.0003 | 0.53 ± 0.07 | 0.56 ± 0.07 | < 0.0001 | 0.52 ± 0.06 |
PBF | 24.92 ± 5.34 | 26.59 ± 5.51 | < 0.0001 | 33.25 ± 5.23 | 35.16 ± 5.78 | < 0.0001 | 29.56 ± 6.75 |
VFI | 11.04 ± 4.79 | 12.02 ± 5.59 | < 0.0001 | 7.87 ± 4.08 | 9.12 ± 4.86 | < 0.0001 | 9.37 ± 4.74 |