Table 2.

Cox proportional hazard regression model by stepwise selection based on AIC, considering the most performing prognostic factors and using the final disease outcome as readout.

	OR	Confidence interval 95%		p-value
		Lower	Upper
Early detectable CT	18.53	2.25	152.8	0.00669
Preoperative CT ≥284 pg/ml	0.36	0.1	1.29	0.1164
Tumour size (mm)	1.03	0.99	1.07	0.06956

Bold numbers highlight significant values.

OR, odds ratio; CT, calcitonin.