CTC positive group

CTC negative group

statistics

P value

TNM (T1/≥T2)

12/21

25/7

z = 4.105

<0.0001

Pathological grade (≤II/≥III)

16/3

9/1

z = 0.7569

0.3615

Tissue type (clear cell carcinoma/papillary carcinoma)

22/2

14/1

z = 0.274

0.8083

Lymph node metastasis (positive/negative)

11/20

0/20

z = 3.005

0.0036

CTC

11.25 ± 0.9070

1.950 ± 0.3362

t = 9.415

<0.0001

Distant transfer (yes/no)

15/15

1/19

z = 3.345

0.0008

Prognosis (survival/death)

25/4

17/0

z = 1.759

0.073