Table 4.

Association between specific occupational exposures and medical conditions (for all workers, n = 178).

	Occupational Exposure		Sum n (%)	p-Value (Chi-Square)
	Yes n (%)	No n (%)
	Dermal contact to chemicals or metals
Skin symptoms	44 (43.1)	20 (27.0)	64 (36.0)	<0.05
	Hard physical work
Back pain	136 (85.0)	14 (87.5)	150 (84.3)	ns
Numbness	67 (49.2)	5 (35.7)	72 (40.4)	ns
	Volume exposure
Hearing loss	22 (15.6)	6 (16.7)	28 (15.7)	ns
	Inhalation of smoke
Shortness of breath	45 (28.5)	4 (23.5)	49 (27.5)	ns
	Drug Use
	Yes (%)	No (%)
Work-related injuries	21 (77.8)	82 (54.3)	103 (57.9)	<0.05

ns = not significant.