Table 2.

Multivariate analysis of progression-free survival.

	Adjusted HR	95% CI	P
CK14
Positive vs. negative	1.995	0.731–5.448	0.178
TNM stage
≥I vs. 0	1.308	0.442–3.867	0.628
WHO grade
High vs. low	6.300	1.742–22.784	0.005
Multifocality
Present vs. absent	3.515	1.130–10.934	0.030

HR, hazard ratio; CI, confidence interval; CK, cytokeratin.