Table 3. The danger of the work environment in different groups.

		The danger of the work environment (%)					P
		Never	Seldom	Sometimes	Often	Usually
Age	≤25yr	24.72	19.10	26.97	13.48	15.73	0.008
	25~35yr	26.65	15.53	24.70	14.13	18.99
	35~45yr	27.50	17.58	25.09	11.12	18.71
	45~55yr	29.37	17.78	25.70	11.50	15.65
	≥55yr	40.25	20.34	20.76	10.17	8.47
Gender	male	20.90	17.58	27.98	13.53	20.01	<0.001
	female	68.79	16.03	8.97	3.97	2.24