Table 1.

Correlation between circHIPK3 expression and clinical characteristic of patients with lung cancer (n = 45)

Variable	CircHIPK3 expression		P value
	Low (n = 22)	High (n = 23)
Sex
Male	5	8	0.513
Female	17	15
Age (years)
<50	8	12	0.373
≥50	14	11
Tumor size (cm)
<3	17	5	0.0003**
≥3	5	18
TNM stage
I–II	16	8	0.017*
III–IV	6	15
Smoking history
Never smokers	15	13	0.542
Smokers	7	10
Lymph node metastasis
No	16	5	0.0009**
Yes	6	18

*P < 0.05, **P < 0.01.