Table 4. Relationships between SR and Clinicopathologic Features 126 PTCs.

Reference parameter	SR ≤ 5 (45)	5 < S ≤ 10 (52)	S > 10 (29)	t value	P value
Size
≤1 cm (57)	18	28	11	2.679	0.262
>1 cm (69)	27	24	18
In isthmus
Yes (7)	5	2	0	4.643	0.098
No (119)	40	50	29
Positon
Upper lobe (6)	3	1	2	6.236	0.134
Middle lobe (114)	42	48	24
Buttom lobe (6)	0	3	3
Position
Near front capsule (14)	2	11	1	8.153	0.477
middle (96)	37	35	24
Near back capsule (16)	6	6	4
Multi-focal
Yes (12)	4	6	2	0.459	0.861
No(114)	41	46	27
Co- existin with HT
Yes (21)	6	11	4	1.191	0.560
No (105)	39	41	25
Cervical lymph nodes metastasis
Yes (27)	12	11	4	1.671	0.449
No (99)	33	41	25