Table I. Demographic and clinical characteristics of patient cohort.

	Total 244 (%)	Group A 126 (%)	Group B 118 (%)	Univariate p value*
Sex
Male	50 (20)	26 (21)	24 (20)
Female	194 (80)	100 (79)	94 (80)	0.95
Age (years)
Mean (range)		46 (16-75)	52 (17-82)
<45	94 (39)	62 (49)	32 (27)
≥45	150 (61)	64 (51)	86 (73)	0.0004
Radiation exposure
Yes	6 (2.5)	2 (1.6)	4 (3)
No	238 (97.5)	124 (98.4)	114 (97)	0.36
cT
0	56 (23)	6 (5)	50 (42)
1	108 (44)	76 (60)	32 (27)
2	67 (27)	38 (30)	29 (25)
3	11 (5)	6 (5)	5 (4)
4	2 (1)	0	2 (2)	<0.0001
Thyroidectomy
Total	228 (93)	119 (94)	109 (92)
Completion	16 (7)	7 (6)	9 (8)	0.51

^*Chi-Square.