Effect of Workplace Noise on Hearing Ability in Tile and Ceramic Industry Workers in Iran: A 2-Year Follow-Up Study

Table 1

Demographic properties of all workers in each job category.

	Group	Mean	SD	𝑃 value
Age (year)	Control	33.50	7.34	0.719
	1	33.50	6.70
	2	32.66	7.06
	3	33.99	6.91
Work experience (year)	Control	7.94	4.46	0.668
	1	7.91	3.83
	2	8.33	3.85
	3	8.45	3.68
Height (cm)	Control	172.23	8.81	0.110
	1	173.55	6.76
	2	174.98	5.44
	3	175.14	5.47
Weight (Kg)	Control	74.16	11.02	0.194
	1	76.72	14.09
	2	79.08	12.35
	3	78.05	12.91