Table I.

Distribution of selected demographic variables and risk factors in esophageal cancer cases and control subjects.

Variable	Cases (n=380)		Controls (n=380)		p-valuea
	n	%	n	%
Age (years)					0.056
<60	142	37.4	117	30.8
≥60	238	62.6	263	69.2
Gender					0.346
Male	269	70.8	257	67.6
Female	111	29.2	123	32.4
Tobacco use					0.014
Never smoked	220	57.9	253	66.6
Have smoked	160	42.1	127	33.4
Alcohol use					0.183
Never consumed	253	66.6	270	71.1
Have consumed	127	33.4	110	28.9

^aTwo-sided χ² test.