Table 2.

Correlation matrix among variables in radiographers

	MNa	Aneuploidyb	LINE-1c	LUMAd	1-year dosee	3-year dosef	Total doseg
MN
Aneuploidy	.54***
LINE-1	−.19	−.49**
LUMA	.45**	.43**	−.07
1-year dose	.31*	.18	−.01	.16
3-year dose	.32*	.19	−.01	.11	.85**
Total dose	.41**	.57***	−.28#	.20	.43**	.50**

Data indicate Pearson’s correlation coefficient

^aMN, total frequency of micronuclei

^bAneuploidy, total frequency of aneuploidy (chromosome 1 and chromosome 4)

^cLINE-1, LINE-1 methylation levels measured by pyrosequencing assay

^dGlobal DNA methylation levels measured by luminometric methylation assay (LUMA)

^e1-year dose, Recent 1-year radiation dose

^f3-year dose, Recent 3-year radiation dose

^gTotal dose, Total cumulative radiation dose

^*p < 0.05;

^**p < 0.01;

^***p < 0.001,

^#borderline significance (p = 0.08)