Table 1. Clinicopathological features and methylation status of CDH13 promoter region in colorectal cancer patients.

	No. of cases	CDH13 methylation
Clinicopathological variable features		+	−	P-value
Sex
Male	45	18	27	0.098a
Female	39	9	30
Maximal tumour size
15–100 mm	84	50.9±21.3b	45.2±16.5	0.182c
Histology
Poorly differentiatedd	6	5	1	0.0053a
Other differentiatede	78	22	56
Extent of tumour
≦mtf	20	6	14	0.814a
mt<	64	21	43
Lymph node metastasis
+	31	6	25	0.055a
−	53	21	32
Dukes' stage
A, B	54	19	35	0.423a
C, D	30	8	22
Total	84	27	57

^aχ² test.

^bMean±s.d.

^cStudent^'s t-test.

^dPoorly differentiated or mucinous adenocarcinoma according to Japanese criteria.

^eWell- or moderately differentiated adenocarcinoma according to Japanese criteria.

^fMuscular tunic.