Table 1.

Correlation between COX-2 expression and clinicopathological characteristics of HCC patients.

	Variables	COX-2 expression		Total	χ 2	P value
		Low	High
Age (year)					0.729	0.393
	≤54	17	28	45
	>54	21	24	45
Sex					0.178	0.673
	Female	6	10	16
	Male	32	42	74
Grade					1.966	0.161
	I/II	30	34	64
	III	8	18	26
T stage					5.024	0.025∗
	T1/T2	27	25	52
	T3/T4	9	24	33
	Dull
N stage						1
	N0	36	47	83
	N1	0	0	0
	Dull
M stage						1
	M0	36	47	83
	M1	0	1	1
	Dull
TNM stage					5.024	0.025∗
	Ι/II	27	25	52
	III/IV	9	24	33
	Dull
Tumor size					4.819	0.028∗
	≤5 cm	22	18	40
	>5 cm	16	34	50

^∗Statistically significant (P < 0.05).