Table 2. Distribution of CYP1A1 and EPHX1 haplotype frequency among lung cancer cases and controls.

	HAPLOTYPE	CASE ( 376)		CONTROL ( 580)		χ2	P value	OR (95%CI)	P value	D'
		%	n	%	n
CYP1A12A*2C	TA	53.34	201	60.80	352	5.00	0.02	1.00		0.72
	TG	3.31	12	2.65	16	0.21	0.64	1.31 (0.57–3.00)	0.50
	CA	26.45	99	23.51	137	0.95	0.32	1.26 (0.91–1.74)	0.15
	CG	16.90	64	13.04	75	2.94	0.08	1.49 (1.00–2.21)	0.04
EPHX1 Tyr113His * His139Arg	TA	44.79	168	45.04	262	0.05	0.81	1.00		0.21
	TG	12.39	47	10.31	59	1.57	0.20	1.23(0.78–1.94)	0.30
	CA	35.26	133	40.13	233	1.82	0.17	0.88 (0.65–1.19)	0.42
	CG	7.56	28	4.52	26	2.64	0.10	1.67 (0.91–3.06)	0.07

D' Linkage Disequilibrium.