Table 2.

Multivariate Logistic Regression for clustering (Cluster 2 vs. Cluster 1).

Variables	Multivariate Logistic Regression
	Odds Ratio (95% Confidence Interval)	P value
age	1.02 (1.01–1.04)	0.0032
T stage		0.0705
T2 vs. T1	0.46 (0.11–1.91)	0.2828
T3 vs. T1	0.35 (0.16–0.77)	0.0088
T4 vs. T1	0.50 (0.27–0.93)	0.028
N stage		0.0129
N1 vs. N0	1.72 (0.99–2.98)	0.0525
N2 vs. N0	0.86 (0.47–1.58)	0.6212