Table 3.

Risk of lateral lymph node metastasis adjusted for other variables.

Variables	OR	95% CI	P-value
DLN and PLN metastasis
0–Ref	–	–	–
1–2	3.9	2.7–5.7	<0.001
≥3	8.5	5.3–13.4	<0.001
Age
≤42 years	1.5	–2.1	0.013
>42 years–Ref	–	–	–
Size
≤8 mm – Ref	–	–	–
9–10 mm	2.0	1.2–3.3	0.005
11–15 mm	3.4	2.2–5.3	< 0.001
>15 mm	4.8	3.0–7.5	< 0.001
cN
cN0–Ref	–	–	–
cN1a	0.7	0.5–1.8	0.201
Location
Upper	3.7	2.5–5.3	<0.001
Other–Ref	–	–	–
gETE
No–Ref	–	–	–
Yes	1.4	0.8–2.4	0.231
Laterality
Left	0.1	0.4–1.0	0.655
Right	0.8	0.6–1.5	0.935
Bilateral–Ref	–	–	–
Multifocality
No–Ref	–	–	–
Yes	1.4	0.9–2.2	0.149

Abbreviations: DLN, Delphian lymph nodes; PLN, pre-tracheal lymph nodes; cN, clinical lymph node; cN0, clinical lymph node-negative; cN1a, clinical lymph node positive in central compartment; gETE, gross-extra-thyroid-extension.