TABLE 3

Overall Survival According to CSI and PET/CT Stage Groups

		Survival at 5 y			Hazard ratio
Stage group	n	Percentage	95% confidence interval	Median survival (y)	Value	95% confidence interval	Log-rank P
CSI stage							0.002
I–IIA	77	38	28–50	3.3	1
IIB–III	37	27	16–46	1.5	1.54	0.96–2.47
IV	25	16	7–39	0.8	2.48	1.48–4.16
PET/CT stage							<0.001
I–IIA	62	40	30–55	3.3	1
IIB–III	42	38	26–56	2.6	1.23	0.74–2.03
IV	35	6	1–22	0.8	3.93	2.42–6.38
Post-PET/CT planned intent							<0.001
Curative	113	38	30–48	2.9	1
Palliative	26	0	Not applicable	0.6	5.36	3.31–8.71