Survey of Occupational Allergic Contact Dermatitis and Patch Test among Clothing Employees in Beijing

Table 1

Demographics and occupational characteristics of the 529 clothing employees.

	Sewing workers	Ironing workers	Managers	Total	value
Number	= 300	= 72	= 157	= 529	—
Mean age (years; M ± SD)	33.3 ± 8.5	35.8 ± 7.8	34.2 ± 9.3	33.92 ± 8.7	—
Median (range)	32 (16–57)	35 (20–50)	33 (17–56)	33 (16–57)	0.062
(% of females)	137 (45.7%)	31 (43.1%)	63 (40.1%)	231 (43.7%)	0.523
Mean duration of work (years)	10.7 ± 7.0	11.9 ± 6.5	10.5 ± 7.3	10.8 ± 7	—
Median (range)	10 (1–30)	10 (1–28)	10 (1–30)	10 (1–30)	0.204
Mean working hours per day	13.9 ± 1.2	13.5 ± 1.3	11.8 ± 1.6	13.2 ± 1.6	—
Median (range)	14 (10–16)	14 (10–16)	12 (10–16)	14 (10–16)	<0.001

Chi-square test.
Kruskal–Wallis test.
Difference between occupational groups is significant ().