Therapeutic Outcomes of Patients with Multifocal Papillary Thyroid Microcarcinomas and Larger Tumors

Table 5

Multivariate analysis by the Cox proportional hazards regression model for survival and mortality.

	β coefficient	Hazard ratio	95% confidence interval		value
			Lower bound	Upper bound
Age (year)	0.013	1.013	1.006	1.020	0.0003
Sex (female versus male)	0.174	1.190	0.956	1.481	0.1190
Tumor size (cm)	−0.062	0.940	0.882	1.001	0.0534
Postoperative serum Tg level after 1 month (ng/mL)	0.000	1.000	1.000	1.000	0.5640
Metastases (soft tissue invasion/distant metastases)	−0.113	0.893	0.784	1.016	0.0863