Table 4. COX regression analysis of different US parameters and Q-USE in the diagnosis of cytologically indeterminate (Thy 3) thyroid follicular lesions.

Variable	Odds ratio	95% confidence interval	p value
Strain ratio	74.22	(15.57–353.82)	<0.001
Irregular margins	17.95	(3.84–83.84)	<0.001
Hypoechogen/mixed	0.40	(0.08–2.10)	0.279
Type 3 vascularization	1.53	(0.07–33.84)	0.788
Microcalcifications	0.69	(0.17–2.79)	0.598