Association of Polymorphisms of Phase I Metabolizing Genes with Sister Chromatid Exchanges in Occupational Workers Exposed to Toluene Used in Paint Thinners

Table 2

SCE frequency by age and consumption habits.

Variables	Control	Exposed
	SCE/cell	SCE/cell
	(mean ± SD)	(mean ± SD)
All	1.73 ± 0.54	4.81 ± 0.92
Age (years)
<30	1.64 ± 0.52	4.47 ± 0.93
30–40	1.83 ± 0.55	5.26 ± 0.70
>40	1.95 ± 0.29^¥	5.83 ± 0.62
Smoking
Nonsmokers	1.70 ± 0.55	4.85 ± 0.92^¥
Smokers	1.86 ± 0.47^¥	4.67 ± 0.99
Alcohol
Alcohol users	1.70 ± 0.52	4.76 ± 0.86
Nonalcohol users	1.85 ± 0.64^¥	5.05 ± 1.27^¥
Tobacco
Nontobacco users	1.73 ± 0.51^¥	4.76 ± 0.93
Tobacco users	1.72 ± 0.80	5.49 ± 0.38^¥

Significant at ; multivariate ANOVA test was used with post hoc analysis for the comparison in SCE frequency in multiple subgroups among studied population.
Significant at + highest mean rank; ^¥highest mean rank (Kruskal-Wallis test).