ALDH3B2 Polymorphism Is Associated with Colorectal Cancer Susceptibility

Table 1

Summary of characteristics of study subjects.

	Cases (n = 485)	Controls (n = 516)	P^a
Age (years), mean ± S.D.	61.23 ± 12.47	61.68 ± 11.81
Gender, n (%)			0.1389
Male	357 (73.6)	358 (69.4)
Female	128 (26.4)	158 (30.6)
Smoking status			0.1613
Nonsmoker	297 (61.2)	338 (65.5)
Smoker	188 (38.8)	178 (34.5)
Drinking status			0.1686
Nondrinker	347 (71.5)	389 (75.4)
Drinker	138 (28.5)	127 (24.6)

^aCalculated by the Chi-squared test.