Table 3.

The concentrations of chemical elements and Se/elements ratios (mg/kg dm) in smokers and nonsmokers among examined patients (mg/kg dm).

Parameter	Mn	Pb	Cd	THg	Se/Pb	Se/Cd	Se/THg
Smokers (n = 18)
AM ± SD	0.31 ± 0.25	2.32 ± 1.38	0.06 ± 0.05	0.01 ± 0.01	0.02 ± 0.02	1.12 ± 1.11	14.18 ± 18.90
Med	0.22	2.09	0.04	0.004	0.02	0.80	8.36
Range	0.08–0.99	0.45–7.28	0.01–0.18	0.001–0.030	0.06–0.08	0.18–4.93	0.94–33.73
QL–QU	0.13–0.36	1.72–2.50	0.03–0.08	0.001–0.006	0.01–0.02	0.44–1.20	6.36–26.61
Nonsmokers (n = 15)
AM ± SD	0.32 ± 0.22	1.34 ± 0.57	0.03 ± 0.03	0.003 ± 0.002	0.04 ± 0.02	1.85 ± 1.16	21.85 ± 13.74
Med	0.28	1.45	0.03	0.002	0.03	1.40	18.52
Range	0.11–0.85	0.35–2.33	0.01–0.13	0.001–0.009	0.02–0.10	0.35–4.49	3.12–47.40
QL–QU	0.15–0.40	0.90–1.67	0.02–0.04	0.001–0.005	0.02–0.05	0.93–2.90	10.17–35.90
Smokers versus Nonsmokers
U	NS	49.0	74	NS	54	72	79
p		0.001	0.03		0.01	0.02	0.04

AM: arithmetic mean; SD: standard deviation; Q_L: lower quartile; Q_U: upper quartile; U: Mann-Whitney U test; p: level of significance; NS: nonsignificant difference.