Table 2.

Frequency of examined workers in different categories of examined parameters in exposed and control groups

Patient characteristics		Overall population		Exposed group		Control group
		No	%	No	%	No	%
Age categories - decades	3 - 20 – 29 y	8	8.90	4	7,41	4	11,11
	4 - 30 – 39 y	20	22.20	12	22,22	8	22,22
	5 - 40 – 49 y	21	23.30	16	29,63	5	13,89
	6 - 50 – 59 y	37	41.10	20	37,04	17	47,22
	7 - 60 – 69 y	4	4.40	2	3,70	2	5,55
	χ 2	25.074		16.872		21.095
	p	0.001		0.001		0.001
Sex	Male	26	28.90	10	18,50	16	44,44
	Female	64	71.10	44	81,50	20	55.56
	χ 2	16.044		21.407		0.444
	p	0.001		0.001		0.505
Occupation	Technician	40	44.40	22	40,70	18	50,00
	Lab. worker	15	16.70	8	14,80	7	19,44
	Doctor	29	32.20	18	33,30	11	30,56
	Engineer	6	6.70	6	11,10	0	0
	χ 2	30.089		13.259		5.467
	p	0.001		0.004		0.046
MN categories (intervals of 10) per 1000 binuclear cells	1 cat: 1 – 9	43	47.80	13	24,07	30	83,33
	2 cat: 10 – 19	14	15.60	8	14,81	6	16,67
	3 cat: 20 – 29	22	24.40	22	40,74	0	0
	4 cat: 30 – 39	10	11.10	10	18,52	0	0
	5 cat: 40 – 49	0	0	0	0	0	0
	6 cat: 50 – 59	1	1.10	1	1,85	0	0
	χ 2	29.444		12.602		16.000
	p	0.001		0.001		0.001
Smoking	Yes	27	30.00	17	31,50	10	27,78
	No	63	70.00	37	68,50	26	72,22
	χ 2	14.400		7.407		7.111
	p	0.001		0.006		0.008

Lab laboratory, MN micronucleus, Cat category; Y years