| 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 |