Annals of Occupational and Environmental Medicine

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
Body mass index	≥25 kg/m²	459	44.6
Job schedule	Shift work	753	73.2
Job schedule	Daytime work	276	26.8
Hyperuricemia (≥7 mg/dl)	No	675	65.6
Hyperuricemia (≥7 mg/dl)	Yes	354	34.4
Hypertension^*	No	882	85.7
Hypertension^*	Yes	147	14.3
Diabetes mellitus^†	No	946	92.1
Diabetes mellitus^†	Yes	83	7.9
Hyperlipidemia^‡	No	738	71.7
Hyperlipidemia^‡	Yes	291	28.3
Liver enzyme abnormality^§	No	811	78.8
Liver enzyme abnormality^§	Yes	218	21.2

*Systolic BP ≥140 mmHg or diastolic BP ≥90 mmHg or currently taking medication for hypertension.
^†Fasting blood glucose ≥126 mg/dl or currently taking medication for diabetes.
^‡LDL ≥160 mg/dl or currently taking medication for hyperlipidemia.
^§AST ≥ 50 IU/l or ALT 45 ≥ IU/l or γ-GTP ≥78 IU/l.

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ISSN: 2052-4374

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