Table 3. Correlation between GDF15 expression and clinicopathologic characteristic of HCC patients.

Characteristic	Number	GDF15 expression		P
		Low	High
Age(yr)
≤ 50	18	6	12	0.842
> 50	22	8	14
Gender
Male	27	10	17	0.697
Female	13	4	9
Pathological grading
I/II	20	10	10	0.047
III	20	4	16
TNM stage
I/II	17	8	9	0.169
III	23	6	17