Table 3.

Multivariate analysis results showing the characteristics independently associated with metastatic disease in PTMC. Bold values are statistically significant.

Least Squares Multiple Regression
Sample size		82
Coefficient of determination R2		0.1663
R2-adjusted		0.1342
Multiple correlation coefficient		0.4078
Residual standard deviation		0.4681
Regression Equation
Independent variables	Coefficient	Std. Error	t	p	rpartial	rsemipartial
(Constant)	0.2297
TTD	0.03242	0.01130	2.868	0.0053	0.3089	0.2965
UM	0.3312	0.1375	2.409	0.0183	0.2632	0.2491
TTD > 10	−0.2383	0.1707	−1.396	0.1666	−0.1561	0.1443
Analysis of Variance
Source	DF	Sum of Squares			Mean Square
Regression	3	3.4090			1.1363
Residual	78	17.0910			0.2191
F-ratio	5.1861
Significance level	p = 0.0026