Response to Initial Therapy of Differentiated Thyroid Cancer Predicts the Long-Term Outcome Better than Classical Risk Stratification Systems

Table 5

Comparison of the area under ROC curves between the ETA, ATA, and RIT systems.

ROC contrast rows estimation and testing results
Contrast	Estimate	Standard error	95% Wald confidence limits		Chi-square	Pr > Chi-sq.
ATA2009-ETA2006	0.0341	0.0215	−0.00807	0.0763	2.5130	0.1129
RIT-ETA2006	0.1578	0.0423	0.0749	0.2407	13.9064	0.0002
RIT-ATA2009	0.1237	0.0400	0.0453	0.2021	9.5551	0.0020