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Table 2 Multivariate cox regression analyses estimating the associations of factors with patient survival

From: PD-1 high expression predicts lower local disease control in stage IV M0 nasopharyngeal carcinoma

Variables OS LRFS
Exp (B) (95.0% CI) P value Exp (B) (95.0% CI) P value
PD-1 expression 3.87 (1.27–11.84) 0.018 16.89 (1.27–11.84) 0.007
High vs low
T stage 1.36 (0.69–2.67) 0.374 4.50 0.66–30.85 0.126
N stage 1.41 (0.81–2.47) 0.224
Induction chemotherapy 1.53 (0.51–4.56) 0.449 5.89 (0.74–46.68) 0.094
No vs yes
Concurrent chemotherapy No vs yes 1.416 (1.17–12.09) 0.750 2.899 (0.36–23.28) 0.317
Gender 0.69 (0.19–2.57) 0.579 0.85 (0.18–4.03) 0.835
Female vs male
Age 0.68 (0.25–1.88) 0.460 0.70 (0.40–1.25) 0.225
< 47 vs ≥47
Pathology 0.65 (0.08–5.39) 0.692 0.379 (0.08–1.86) 0.232
Non-keratinizing vs keratinizing