Table 1 Baseline characteristics of the study population according to SUA quartiles
Characteristics | SUA quartiles (mg/dL) | |||||
|---|---|---|---|---|---|---|
Total | < 3.50 | 3.50–4.20 | 4.30–5.00 | > 5.00 | P value | |
Age (years) | 58.1 (9.4) | 56.5 (9.0) | 57.6 (9.3) | 58.5 (9.3) | 59.6 (9.8) | < 0.001 |
Male | 3546 (46.4) | 351 (19.6) | 702 (36.2) | 1012 (54.1) | 1481 (72.8) | < 0.001 |
Education level | < 0.001 | |||||
 Primary | 2165 (28.3) | 645 (36.0) | 615 (31.7) | 471 (25.2) | 434 (21.3) |  |
 Secondary | 3131 (41.0) | 686 (38.2) | 759 (39.1) | 762 (40.7) | 924 (45.4) |  |
 Higher | 2343 (30.7) | 463 (25.8) | 565 (29.1) | 639 (34.1) | 676 (33.2) |  |
Marital status | 0.576 | |||||
 Married | 6832 (89.4) | 1610 (89.7) | 1725 (89.0) | 1680 (89.7) | 1817 (89.3) |  |
 Divorced | 86 (1.1) | 19 (1.1) | 16 (0.8) | 23 (1.2) | 28 (1.4) |  |
 Widowed | 721 (9.4) | 165 (9.2) | 198 (10.2) | 169 (9.0) | 189 (9.3) |  |
Cigarette smoking | < 0.001 | |||||
 Never | 4637 (60.7) | 1411 (78.7) | 1324 (68.3) | 1042 (55.7) | 860 (42.3) |  |
 Current | 2424 (31.7) | 315 (17.6) | 511 (26.4) | 680 (36.3) | 918 (45.1) |  |
 Former | 578 (7.6) | 68 (3.8) | 104 (5.4) | 150 (8.0) | 256 (12.6) |  |
Alcohol intaking | < 0.001 | |||||
 Never | 5169 (67.7) | 1453 (81.0) | 1398 (72.1) | 1212 (64.7) | 1106 (54.4) |  |
 Light | 893 (11.7) | 159 (8.9) | 226 (11.7) | 260 (13.9) | 248 (12.2) |  |
 Moderate | 373 (4.9) | 51 (2.8) | 89 (4.6) | 95 (5.1) | 138 (6.8) |  |
 High | 1204 (15.8) | 131 (7.3) | 226 (11.7) | 305 (16.3) | 542 (26.6) |  |
Disability | 1849 (24.2) | 469 (26.1) | 469 (24.2) | 464 (24.8) | 447 (22.0) | 0.023 |
Depressive symptoms | 2757 (36.1) | 768 (42.8) | 727 (37.5) | 641 (34.2) | 621 (30.5) | < 0.001 |
Sleep duration (h) | 6.5 (1.8) | 6.5 (1.8) | 6.4 (1.7) | 6.5 (1.7) | 6.5 (1.8) | 0.566 |
Grip strength (kg) | 29.7 (10.0) | 26.4 (8.8) | 28.4 (9.6) | 30.7 (9.9) | 33.0 (10.4) | 0.229 |
SBP (mmHg) | 126.0 (18.9) | 123.7 (18.6) | 125.0 (18.7) | 125.8 (18.7) | 129.1 (19.1) | < 0.001 |
DBP (mmHg) | 73.9 (11.2) | 72.8 (10.8) | 73.3 (10.9) | 73.9 (11.4) | 75.6 (11.9) | < 0.001 |
BMI (kg/m2) | 23.0 (3.4) | 22.7 (8.8) | 23.0 (3.4) | 23.2 (3.4) | 23.2 (3.5) | < 0.001 |
WC (cm) | 84.2 (9.6) | 82.5 (9.1) | 83.8 (9.4) | 84.8 (9.7) | 85.6 (9.9) | < 0.001 |
PR (times/min) | 72.5 (10.3) | 72.4 (9.9) | 72.3 (10.1) | 72.5 (10.2) | 72.9 (10.8) | < 0.001 |
HbA1c (%) | 5.23 (0.8) | 5.27 (1.0) | 5.20 (0.7) | 5.23 (0.7) | 5.21 (0.6) | 0.048 |
FPG (mg/dL) | 108.1 (32.4) | 108.7 (39.3) | 107.6 (32.8) | 107.2 (28.7) | 109.1 (28.1) | 0.207 |
TC (mg/dL) | 191.8 (38.3) | 187.7 (36.1) | 191.8 (37.6) | 191.8 (38.0) | 195.4 (40.6) | < 0.001 |
TG (mg/dL) | 127.1 (99.6) | 111.8 (72.9) | 120.3 (88.2) | 127.8 (93.1) | 146.5 (128.6) | < 0.001 |
HDL-C (mg/dL) | 52.0 (15.3) | 53.9 (14.5) | 52.8 (14.3) | 51.3 (15.6) | 50.3 (16.4) | < 0.001 |
LDL-C (mg/dL) | 115.2 (34.3) | 113.4 (32.5) | 116.4 (33.7) | 115.6 (33.5) | 115.2 (37.2) | 0.065 |
CRE (mg/dL) | 0.76 (0.19) | 0.65 (0.13) | 0.72 (0.14) | 0.78 (0.16) | 0.89 (0.25) | < 0.001 |
BUN (mg/dL) | 15.6 (4.5) | 14.5 (4.0) | 15.3 (4.3) | 15.9 (4.3) | 16.8 (4.9) | < 0.001 |
CRP (mg/L) | 2.47 (7.1) | 2.31 (7.2) | 2.40 (7.4) | 2.47 (7.0) | 2.66 (6.8) | 0.462 |