Table 2. Results of Multivariable Logistic Regression Analysis of the Association between US Features and Metastatic Lymph Nodes.

US Features	Adjusted OR	95% Confidence Interval	P
Absence of hilum	2.407	2.056–2.758	< 0.001
Cystic changes	84.259	10.034–707.544	< 0.001
Punctate echogenic foci	3.105	1.810–5.325	< 0.001
Abnormal vascularity	5.860	2.976–11.537	< 0.001
Cortical hyperechogenecity	7.907	4.495–13.908	< 0.001

OR = odds ratio, US = ultrasonography