Table 2. Distribution of CYP1A1 Ile462Val genotype among acute leukemia cases and controls included in the meta-analysis.

First Author	Year	Genotyping method	Cases			Controls			HWE (control)
			Val/Val	Val/Ile	Ile/Ile	Val/Val	Val/Ile	Ile/Ile	Chi-squre	P
Krajinovic	1999	PCR-RFLP	1	11	158	0	24	275	0.523	>0.05
Gao	2003	ASA	10	44	24	11	59	42	2.226	>0.05
D’Alo	2004	PCR-RFLP	0	14	179	0	25	248	0.629	>0.05
Gallegos-Arreola	2004	PCR	22	65	49	8	59	69	1.010	>0.05
Joseph	2004	PCR-RFLP	10	34	74	3	20	95	2.168	>0.05
Selvin	2004	Not determined	5	39	131	4	44	127	0.007	>0.05
Majumdar	2008	PCR-RFLP	1	24	85	3	18	105	3.687	>0.05
Lee	2009	SNaPshot	6	39	60	9	65	85	0.567	>0.05
Yamaguti	2009	PCR-RFLP	4	54	75	2	39	92	0.891	>0.05
Yamaguti	2010	PCR-RFLP	3	36	60	3	29	67	0.004	>0.05
Razmkhah (Adult)	2011	PCR-RFLP	1	38	66	1	18	76	0.003	>0.05
Razmkhah (Childhood)	2011	PCR-RFLP	0	13	72	0	14	80	0.609	>0.05
Swinney	2011	Golden gate assay	14	40	188	18	118	505	10.693	<0.05
Kim	2012	PCR-RFLP	17	173	225	87	654	959	3.311	>0.05