Table 2.

Multivariate analyses of risk factors for parathyroid carcinoma.

Variables	Multivariate analysis
	OR (95% CI)	P - value
Intact PTH	1.001 (0.998–1.006)	0.2336
Serum calcium	1.239 (0.609–2.562)	0.5512
Tumor size	1.090 (1.026–1.173)	0.0035
LMR	0.763 (0.556–0.994)	0.0445

LMR, lymphocyte/monocyte ratio; OR, odds ratio.

Bold indicates statistical significance, P < 0.05.