Table 2.

Example from Li et al: "A common polymorphism in XRCC1 as a biomarker of susceptibility for chemically induced genetic damage" [11]

	Individuals with XRCC1 high-risk genotype (Gln – Gln)		Individuals with XRCC1 low-risk genotype (Arg – Arg)
	p53+	p53-	p53+	p53-
High vinyl chloride exposure (>4000 ppm-yrs)	8	2	11	20
Low vinyl chloride exposure (≤1000 ppm-yrs)	5	6	6	18
Risk Ratio	1.76		1.42
Odds Ratio	4.80		1.65