Table 2A. Genotype and allele frequencies of IL-8(-251) between DR and DNR.

Genotype	SNP	DR		DNR		OR (95% CI)	P
		n=528	%	n=515	%
	T/T	258	48.9	313	60.8	2.286 (1.382, 3.782)	0.001
	T/A	221	41.9	176	34.2	1.501 (0.897, 2.512)	0.122
	A/A	49	9.3	26	5.0	reference
Allele
	T	737	69.8	798	77.8	0.660 (0.542, 0.804)	0.000
	A	319	30.2	228	22.2

Χ² test was used to compare the genotype and allele frequencies between DR and DNR.

The SNP is in Hardy–Weinberg equilibrium.

P-value<0.05 is considered to be statistically significant.

The odds ratio for one genotype was calculated against the AA genotypes combined.