Table 1 Comparison of population characteristics of steelworkers
From: Influence of occupational exposure on hyperuricemia in steelworkers: a nested case–control study
Variable | Control group | Case group | χ2 | P |
|---|---|---|---|---|
Marital status, n (%) | 1.395 | 0.498 | ||
Unmarried | 19(3.0) | 13(2.0) | ||
Married | 594(92.7) | 596(93.0) | ||
Other | 28(4.3) | 32(5.0) | ||
Education level, n (%) | 9.240 | 0.010* | ||
Primary and below | 8(1.3) | 7(1.1) | ||
Junior, Senior and Secondary | 456(71.1) | 503(78.5) | ||
Junior college or above | 177(27.6) | 131(20.4) | ||
Monthly per capita household income (RMB), n (%) | 27.294 | < 0.001* | ||
< 1,500 | 214(33.4) | 132(20.6) | ||
1,500–2,500 | 263(41.0) | 300(46.8) | ||
≥ 2,500 | 164(25.6) | 209(32.6) | ||
BMI (kg/m2), n (%) | 61.599 | < 0.001* | ||
< 24 | 340(53.1) | 206(32.1) | ||
24–27 | 220(34.3) | 286(44.6) | ||
≥ 28 | 81(12.6) | 149(23.3) | ||
High blood pressure, n (%) | 23.505 | < 0.001* | ||
No | 579(90.3) | 518(80.8) | ||
Yes | 62(9.7) | 123(19.2) | ||
Diabetes, n (%) | 20.182 | < 0.001* | ||
No | 591(92.2) | 539(84.1) | ||
Yes | 50(7.8) | 102(15.9) | ||
Dyslipidemia, n (%) | 29.845 | < 0.001* | ||
No | 279(43.5) | 185(28.9) | ||
Yes | 362(56.5) | 456(71.1) | ||
Abnormal kidney function, n (%) | 18.293 | < 0.001* | ||
No | 563(87.8) | 506(78.9) | ||
Yes | 78(12.2) | 135(21.1) | ||
Abnormal liver function, n (%) | 6.086 | 0.014* | ||
No | 550(85.8) | 517(80.7) | ||
Yes | 91(14.2) | 124(19.3) | ||
Frequency of vegetable consumption, n (%) | 5.255 | 0.072 | ||
Occasionally | 46(7.2) | 46(7.2) | ||
Frequently | 229(35.7) | 268(41.8) | ||
Daily | 366(57.1) | 327(51.0) | ||
Frequency of fruit consumption, n (%) | 9.152 | 0.010* | ||
Occasionally | 49(7.6) | 46(7.2) | ||
Frequently | 212(33.1) | 264(41.2) | ||
Daily | 380(59.3) | 331(51.6) | ||
Frequency of meat consumption, n (%) | 18.146 | < 0.001* | ||
Never | 11(1.7) | 16(2.5) | ||
Occasionally | 235(36.7) | 228(35.6) | ||
Frequently | 240(37.4) | 183(28.5) | ||
Daily | 155(24.2) | 214(33.4) | ||
Frequency of egg consumption, n (%) | 7.513 | 0.057 | ||
Never | 76(11.9) | 99(15.5) | ||
Occasionally | 432(67.4) | 441(68.8) | ||
Frequently | 115(17.9) | 88(13.7) | ||
Daily | 18(2.8) | 13(2.0) | ||
Frequency of dairy product consumption, n (%) | 11.601 | 0.009* | ||
Never | 12(1.8) | 19(3.0) | ||
Occasionally | 192(30.0) | 217(33.9) | ||
Frequently | 341(53.2) | 283(44.1) | ||
Daily | 96(15.0) | 122(19.0) | ||
Frequency of soy product consumption, n (%) | 3.329 | 0.344 | ||
Never | 28(4.3) | 29(4.5) | ||
Occasionally | 403(62.9) | 423(66.0) | ||
Frequently | 189(29.5) | 162(25.3) | ||
Daily | 21(3.3) | 27(4.2) | ||
Frequency of seafood consumption, n (%) | 17.202 | 0.001* | ||
Never | 106(16.5) | 75 (11.7) | ||
Occasionally | 340(53.1) | 314(49.0) | ||
Frequently | 154(24.0) | 179(27.9) | ||
Daily | 41(6.4) | 73(11.4) | ||
Physical activity level, n (%) | 20.026 | < 0.001* | ||
Light physical activity | 54(8.4) | 107(16.7) | ||
Moderate physical activity | 60(9.4) | 52(8.1) | ||
Heavy physical activity | 527(82.2) | 482(75.2) | ||
Physical exercise, n (%) | 20.870 | < 0.001* | ||
Never exercise | 132(20.6) | 187(29.2) | ||
1 to 2 times a week | 299(46.7) | 301(47.0) | ||
3 to 4 times a week | 63(9.8) | 58(9.0) | ||
5 to 7 times a week | 147(22.9) | 95(14.8) | ||
Smoking, n (%) | 1.394 | 0.498 | ||
Never smoked | 274(42.8) | 256(39.9) | ||
Former smoker | 33(5.1) | 30(4.7) | ||
Now smoking | 334(52.1) | 355(55.4) | ||
Drinking, n (%) | 24.252 | < 0.001* | ||
No | 384(59.9) | 296(46.2) | ||
Yes | 257(40.1) | 345(53.8) | ||
Tea drinking, n (%) | 2.195 | 0.138 | ||
No | 270(42.1) | 244(38.1) | ||
Yes | 371(57.9) | 397(61.9) |