Table 2.

Results of univariate and multivariate Cox regression of overall survival in the training cohort

Cohort	Training cohort
Variable	Univariate			Multivariate
	HR	95% CI	P-value	HR	95% CI	P-value
Immune infiltrating score	6.459	4.409–9.462	< 0.001	5.322	3.574–7.926	< 0.001
Age	1.025	1.014–1.035	< 0.001	1.024	1.014–1.035	< 0.001
Sex			0.031			0.079
Female	Reference			Reference
Male	1.245	1.021–1.518	0.031	1.196	0.979–1.460	0.079
TNM stage			< 0.001			< 0.001
Stage I	Reference			Reference
Stage II–III	2.682	2.195–3.278	< 0.001	2.443	1.996–2.990	< 0.001
Stage IV	2.256	0.721–7.053	0.162	1.835	0.586–5.740	0.297

HR hazard ratio, CI confidence interval