Table 2. Differential distribution of genotypes in leukemia cases and controls.

OR: Odds ratio, CI: Confidence interval, df: Degree of freedom

	Leukemia Cases		Control cases
Genotype	n	(% within exposure)	n	(% within exposure)	OR	95% CI	Test of Significant
9 allele	10	77.0%	5	23.1%	8	1.522 – 42.042	χ2= 6.652, df = 1; P-value =0.025
9.3 allele	5	83.3%	1	16.7%	7	0.705 – 69.490	χ2= 3.333, df = 1; P-value =0.169