Table 1. Expression of COL1A2 according to patients’ clinical features.

Factors	COL1A2 mRNA expression		P value
	High (n=26)	Low (n=26)
Gender			0.095
Male	17	11
Female	9	15
Age(years)			0.271
≥50	6	3
<50	20	23
Tumor size (cm)			0.336
>5	8	5
≤5	18	21
Lymph node metastasis			0.011*
Positive	7	16
Negative	19	10
Differentiation			0.010*
Good/moderate	15	6
Poor	11	20

*, P<0.05.