CDH1 promoter polymorphism (-347G→GA) is a possible prognostic factor in sporadic colorectal cancer

Table 1 Clinical characteristics of the CRC patients and normal controls

	CRC patients (%)	Normal controls (%)	P
Sex
Male	188 (64.8)	212 (63.3)
Female	102 (35.2)	123 (36.7)	0.6881
Age (yr)
Range	27-85	15-81
Mean	63.51 ± 13.24	58.62 ± 17.45	0.4072
Smoking history
Yes	117 (40.3)	122 (36.4)
No	173 (59.7)	213 (63.6)	0.3141
Drinking history
Yes	128 (44.1)	135 (40.3)
No	162 (55.9)	200 (59.7)	0.3321
Stage
Dukes A	12
Dukes B	89
Dukes C	102
Dukes D	87
Location
Ascending, transverse	138
Descending, sigmoid	61
Rectum	91
Total	290	335

¹Two-tailed χ²-test;

²Two-tailed t-test; CRC: Colorectal cancer.