Table 1.

Correlations of circVAPA expression with clinicopathologic features of patients with oral cancer

Factor	circVAPA expression		P-value
	Low (n=30)	High (n=30)
Age			0.197
≤60 years	17	12
>60 years	13	18
Sex			0.606
Men	15	18
Women	15	12
Tumor size			0.010
≤2 cm	19	9
>2 cm	11	21
Tumor differentiation			0.302
I	17	13
II	13	17
T classification			0.0389
T1–T2	18	11
T3–T4	11	19
N classification			0.020
N0–N1	20	11
N2–N3	10	19
Clinical stage			0.002
I/II	18	6
III/IV	12	24
Distant metastasis			<0.001
Yes	9	25
No	21	5

Chi-square test was used to analyze the relationship between circVAPA expression and clinicopathological data.