Table 4.

The complications and clinical outcomes after ablation compared between two periods.

	2015.10-2016.7	2016.8-2017.5	P value*
Complication rate among different risk grading (Patient Number(n) , rate(%) )
0, Low risk	0(0%)	0(0%)	/
1, Medium risk	0(0%)	0(0%)	/
2, High risk	0(0%)	0(0%)	/
3, Very high risk	4(2.1%)	0(0%)	0.123
Complications (Patient Number(n) , rate(%))
Severe bleeding	0(0%)	0(0%)	/
Skin burns	0(0%)	0(0%)	/
Damage of anterior cervical muscle	0(0%)	0(0%)	/
Damage of recurrent laryngeal nerve	3(1.6%)	0(0%)	0.248
Damage of esophagus	0(0%)	0(0%)	/
Damage of common carotid artery	0(0%)	0(0%)	/
Damage of internal jugular vein	0(0%)	0(0%)	/
Damage of parathyroid glands	0(0%)	0(0%)	/
Damage of cervical sympathetic trunk	1(0.5%)	0(0%)	1.000
Damage of vagus nerve	0(0%)	0(0%)	/
Total ablation time for one patient, mean (min)
Total ablation time	2.47	1.53	0.06
Thyroid function one month after ablation, Median(Range)
FT3	4.855(3.7-11.99)	4.88(3.64-53.69)	0.08
TGAb	15.24(8.81-24.31)	14.905(1.55-67.19)	0.35
TPOAb	0.12(0.12-2000)	0.12(0.12-4000)	0.87
TRAb	10.885(5-600)	16.57(5-600)	0.34
TSH	0.3(0.3-10.96))	0.3(0.3-20.45)	0.77
FT4	1.495(0.01-36.52)	1.69(0.01-12.04)	0.66

* P value was calculated using the Independent T test for continuous variables and Fisher's exact test for categorical variables.