Table 2.

Univariate and multivariate logistic regression analysis for CLNM in patients with PTMC

Independent variable	Univariate		Multivariate
	OR (95% CI)	P-value	OR (95% CI)	P-value
Sex (female vs male)	0.675 (0.609–0.749)	0.001	0.673 (0.605–0.748)	0.001
Age (≥45 vs <45 years)	0.646 (0.591–0.706)	0.001	0.683 (0.623–0.749)	0.001
Race
Black	1 (reference)		1 (reference)
White	1.978 (1.550–2.522)	0.001	1.656 (1.295–2.117)	0.001
Othera	2.152 (1.632–2.839)	0.001	1.578 (1.191–2.089)	0.001
Size	1.199 (1.181–1.219)	0.001	1.172 (1.153–1.191)	0.001
Histology (PTMC vs FV-PTMC)	0.635 (0.569–0.708)	0.001	0.641 (0.574–0.716)	0.001
Multifocality	2.063 (1.888–2.253)	0.001	1.662 (1.516–1.821)	0.001
ETE
Negative	1 (reference)		1 (reference)
Capsule	1.537 (1.232–1.919)	0.001	1.232 (1.183–1.543)	0.007
Minimal	2.992 (1.961–4.566)	0.001	2.119 (1.377–3.263)	0.001
Gross	3.657 (3.203–4.175)	0.001	2.546 (2.218–2.921)	0.001
Metastasisb	1.841 (0.979–3.462)	0.058	1.152 (0.598–2.222)	0.672

Notes:

^aIncluding American Indian/Alaska Native and Asian/Pacific Islander.

^bIncluding the lungs, bones, and brains.

Abbreviations: CLNM, central lymph node metastasis; PTMC, papillary thyroid microcarcinoma; OR, odds ratio; CI, confidence interval; FV-PTMC, follicular variant of papillary thyroid microcarcinoma; ETE, extrathyroidal extension.