Analysis of Clinical Outcome of Patients with Poorly Differentiated Thyroid Carcinoma

Table 3

The results of multivariate analyses for DFS and cause-specific survival.

(a) For DSF

Factors	Relative risk	C.I.	𝑃 value
Poor differentiation	4.456	1.953–10.167	𝑃<.0005
Extrathyroidal infiltration	2.898	1.278–6.572	𝑃<.05

(b) For cause-specific survival

Factors	Relative risk	C.I.	𝑃 value
Poor differentiation	9.343	1.314–66.453	𝑃<.05
Older age	1.306	1.103–1.547	𝑃<.005

C.I.: confidence interval