The Effect of Levothyroxine Discontinuation Timing on Postoperative Hypothyroidism after Hemithyroidectomy for Papillary Thyroid Microcarcinoma

Table 2

Univariate analysis for the factors between the success and failure of levothyroxine discontinuation after hemithyroidectomy.

	⁢Discontinuation of levothyroxine		value
	Success	Failure
Age			0.700
<45 years	73	77
≥45 years	52	49
Gender			0.649
Male	11	9
Female	114	117
Underlying thyroid abnormality			0.001
Normal thyroid	114	94
Hashimoto thyroiditis	3	4
Non-Hashimoto lymphocytic thyroiditis	8	28
Preoperative TSH			<0.001
0.27 ≤ TSH < 2.2	113	84
2.3 ≤ TSH ≤ 4.2	12	42
Autoantibody			0.844
Normal	29	31
Abnormal	96	95
Number of discontinuation attempts			<0.001
1	90	63
2	19	61
3	2	2
4	5	0
5	9	0
Initial discontinuation time			<0.001
≤3 months	38	71
>4 months	87	55

Note: data are number of each item.