Table 1 Correlations between circ_001422 expression and clinicopathological characteristics of patients with OS

Age (years)

0.520

≤ 18

30

3.108 ± 1.529

>  18

25

3.373 ± 1.494

Gender

0.150

Male

32

3.477 ± 1.579

Female

23

2.882 ± 1.354

Clinical stage

0.019

I

19

2.801 ± 1.528

II

20

2.938 ± 1.067

III-IV

16

4.098 ± 1.661

Tumor size (cm)

0.003

≤ 5

24

2.557 ± 0.881

>  5

31

3.748 ± 1.686

Distant metastasis

0.005

Absent

39

2.871 ± 1.296

Present

16

4.098 ± 1.661

Primary tumor location

0.818

Arm/hand

20

3.381 ± 1.591

Leg/foot

31

3.168 ± 1.539

Others

4

2.929 ± 0.850