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Table 1 General characteristics of study subjects (n = 1029)

From: The association between shift work and hyperuricemia in steelmaking male workers

  n %
Total 1,029 100
Age (years) ~29 145 14.1
30 ~ 39 326 31.7
40 ~ 49 192 18.7
50~ 366 35.6
Body mass index <25 kg/m2 570 55.4
≥25 kg/m2 459 44.6
Job schedule Shift work 753 73.2
Daytime work 276 26.8
Hyperuricemia (≥7 mg/dl) No 675 65.6
Yes 354 34.4
Hypertension* No 882 85.7
Yes 147 14.3
Diabetes mellitus No 946 92.1
Yes 83 7.9
Hyperlipidemia No 738 71.7
Yes 291 28.3
Liver enzyme abnormality§ No 811 78.8
Yes 218 21.2
  1. *Systolic BP ≥140 mmHg or diastolic BP ≥90 mmHg or currently taking medication for hypertension.
  2. Fasting blood glucose ≥126 mg/dl or currently taking medication for diabetes.
  3. LDL ≥160 mg/dl or currently taking medication for hyperlipidemia.
  4. §AST ≥ 50 IU/l or ALT 45 ≥ IU/l or γ-GTP ≥78 IU/l.
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