TABLE 4

Multivariate Analysis of Risk Factors Associated with Occult Lymph Node Metastasis

Variable	Category	Hazard ratio	95% Confidence interval	P^*
cT classification^†	cT2–4	4.6	1.7–12.4	0.003
SUV_max^†	≥4.8	3.5	1.3–09.2	0.012
cT classification + SUV_max	cT2–4 and ≥4.8	13.2	5.4–31.9	<0.001

↵* Adjusted for age and sex.
↵† Obtained from multivariate analysis excluding cT classification + SUV_max.
c = clinical.