Table 2.

Comparison of clinical findings and environmental risk factors between the groups with and without GO.

Factor	GO (−)	GO (+)	P value
Thyroid disease in family	38.0 (35)	68.4 (26)	0.002
Loss of weight	56.5 (52)	60.5 (23)	0.670
Drug-induced hypothyroidism	8.7 (8)	18.4 (7)	0.114
Thyroid gland volume (clinical assessment)
I°	27.2 (25)	13.2 (5)	<0.001
II°	56.5 (52)	34.2 (13)
III°	16.3 (15)	52.6 (20)
Smoking	3.1 (4)	7.7 (10)	<0.001
Work character
Does not work	11.5 (15)	3.8 (5)	0.761
Intellectual	51.5 (67)	23.1 (30)
Physical	7.7 (10)	2.3 (3)
Stress	10.0 (13)	11.5 (15)	<0.001