Cytochrome p450 2E1 polymorphisms and the risk of gastric cardia cancer

Table 1 Select characteristics of cardia cancer cases (n = 159) and controls (n = 192).

Variable	Cases		Controls		P
	n	(%)	n	(%)
Age (yr)
≤59	62	39.0	93	48.4
60-69	61	38.4	60	31.3
≥70	36	22.6	39	20.3	0.196
Sex
Female	30	18.9	52	27.1
Male	129	81.1	140	72.9	0.07
Education (yr)
<12	95	59.7	89	46.4
≥12	64	40.3	103	53.6	0.012