Table 3.

Multivariate analysis of risk factors of CLNM in patients with overt PTMC.

Characteristics	Adjusted OR	95% CI	P-value
Sex
Female	1
Male	1.561	0.831–2.934	0.166
Age (Y)
≥45	1
<45	1.815	1.036–3.179	0.037
Tumor size (mm)
≤ 5	1
>5	2.030	1.140–3.617	0.016
ETE
Absence	1
Presence	10.113	3.259–31.379	<0.001

CLNM central lymph node metastasis, PTMC papillary thyroid microcarcinoma, OR Odds ratio, 95% CI 95% confidence interval.

Y, year; ETE, extrathyroidal extension. The bold values mean the P <0.05.