Correlation between PD-L1 Expression, Clinicopathological Factors, and Metastasis Risk in Colorectal Cancer Patients

Table 2

The relationship between different variables and the mortality risk by using Cox regression modelling.

Variables	HR	95% CI	value
Age at disease onset, years	1.007	0.978–1.038	0.626
Female	0.532	0.218–1.298	0.165
Metastasis	3.252	0.693-15.260	0.135
Stage
2	—	—	—
3	1.720	0.298–9.931	0.545
4	0.302	0.041–2.223	0.240
CEA	0.812	0.345–1.914	0.635
PD-L1	0.867	0.332–2.262	0.771

CEA: carcinoembryonic antigen.