Table 1 Basic characteristics of the participants (n = 72,840)
Variables | Total (n = 72,840) | Non-hyperuricemia (n = 59,352) | Hyperuricemia (n = 13,488) | P value |
|---|---|---|---|---|
Age (%), years |  |  |  |  < 0.001 |
 < 65 | 61,166 (84.0) | 50,340 (84.8) | 10,826 (80.3) |  |
 ≥ 65 | 11,674 (16.0) | 9012 (15.2) | 2662 (19.7) |  |
Sex (%) |  |  |  |  < 0.001 |
 Male | 28,683 (39.4) | 21,056 (35.5) | 7627 (56.5) |  |
 Female | 44,157 (60.6) | 38,296 (64.5) | 5861 (43.5) |  |
Ethnicity (%) | Â | Â | Â | 0.180 |
 Han | 46,713 (64.1) | 38,131 (64.2) | 8582 (63.6) |  |
 Minority | 26,127 (35.9) | 21,221 (35.8) | 4906 (36.4) |  |
Marital status (%) |  |  |  |  < 0.001 |
 Did not cohabit | 7864 (10.8) | 6246 (10.5) | 1618 (12.0) |  |
 Cohabited | 64,976 (89.2) | 53,106 (89.5) | 11,870 (88.0) |  |
Education (%) |  |  |  |  < 0.001 |
 Illiteracy | 16,828 (23.1) | 13,941 (23.5) | 2887 (21.4) |  |
 Primary school | 18,639 (25.5) | 15,536 (26.2) | 3103 (23.0) |  |
 Junior high school | 19,961 (27.4) | 16,275 (27.4) | 3686 (27.3) |  |
 High school | 8997 (12.4) | 7083 (12.0) | 1914 (14.2) |  |
 Junior college | 5230 (7.2) | 4117 (6.9) | 1113 (8.3) |  |
 College or above | 3185 (4.4) | 2400 (4.0) | 785 (5.8) |  |
Rural/urban (%) |  |  |  |  < 0.001 |
 Urban | 38,096 (52.3) | 30,465 (51.3) | 7631 (56.6) |  |
 Rural | 34,744 (47.7) | 28,887 (48.7) | 5857 (43.4) |  |
Province (%) |  |  |  |  < 0.001 |
 Guizhou | 15,279 (21.0) | 11,580 (19.6) | 3699 (27.5) |  |
 Sichuan | 18,249 (25.1) | 14,324 (24.1) | 3925 (29.1) |  |
 Yunnan | 20,306 (27.8) | 17,292 (29.1) | 3014 (22.3) |  |
 Chongqing | 19,006 (26.1) | 16,156 (27.2) | 2850 (21.1) |  |
Occupation (%) |  |  |  |  < 0.001 |
 Agriculture and related | 25,880 (35.5) | 21,881 (37.0) | 3999 (29.6) |  |
 Unemployed | 21,132 (29.0) | 16,818 (28.3) | 4314 (32.0) |  |
 Factory worker | 5523 (7.6) | 4476 (7.5) | 1047 (7.8) |  |
 Clerk | 11,592 (15.9) | 9219 (15.5) | 2373 (17.6) |  |
 Self-employed | 4660 (6.4) | 3725 (6.3) | 935 (6.9) |  |
 Other | 4053 (5.6) | 3233 (5.4) | 820 (6.1) |  |
Mediterranean diet score [mean (SD)] | 24.87 (4.43) | 24.93 (4.42) | 24.64 (4.46) |  < 0.001 |
Annual family income (%), CNY a |  |  |  |  < 0.001 |
 < 12,000 | 12,700 (17.4) | 10,375 (17.5) | 2325 (17.2) |  |
 12,000–19,999 | 12,505 (17.2) | 10,434 (17.6) | 2071 (15.4) |  |
 20,000–59,999 | 26,395 (36.2) | 21,761 (36.6) | 4634 (34.4) |  |
 60,000–99,999 | 11,155 (15.3) | 8938 (15.1) | 2217 (16.4) |  |
 100,000–199,999 | 8070 (11.1) | 6309 (10.6) | 1761 (13.1) |  |
 ≥ 200,000 | 2015 (2.8) | 1535 (2.6) | 480 (3.5) |  |
Smoking status (%) |  |  |  |  < 0.001 |
 Never smoke | 54,100 (74.3) | 45,496 (76.7) | 8604 (63.8) |  |
 Smoke or quit | 18,740 (25.7) | 13,856 (23.3) | 4884 (36.2) |  |
Passive smoking status (%) | Â | Â | Â | 0.154 |
 No | 35,193 (48.3) | 28,601 (48.2) | 6592 (48.9) |  |
 Yes | 37,647 (51.7) | 30,751 (51.8) | 6896 (51.1) |  |
Alcohol consumption (%) |  |  |  |  < 0.001 |
 Never drinking | 40,579 (55.7) | 34,355 (57.9) | 6224 (46.1) |  |
 Drinking | 32,261 (44.3) | 24,997 (42.1) | 7264 (53.9) |  |
Indoor air pollution (%) |  |  |  |  < 0.001 |
 Light | 11,492 (15.8) | 8893 (15.0) | 2599 (19.3) |  |
 Moderate | 57,681 (79.2) | 47,394 (79.8) | 10,287 (76.3) |  |
 Heavy | 3667 (5.0) | 3065 (5.2) | 602 (4.4) |  |
BMI (%), kg/m2 |  |  |  |  < 0.001 |
 [0, 28) | 64,114 (88.0) | 53,696 (90.5) | 10,418 (77.2) |  |
 [28, Inf] | 8726 (12.0) | 5656 (9.5) | 3070 (22.8) |  |
Physical activity [mean (SD)], MET-h/day | 26.76 (18.34) | 27.36 (18.44) | 24.12 (17.68) |  < 0.001 |
SUA levels [mean (SD)], μmol/L | 317.88 (88.05) | 287.66 (59.79) | 450.86 (66.61) |  < 0.001 |