Table 4.

Multivariate analysis of advanced nodal metastasis

Node metastasis = N2–N3
CovariateLevelOR (95% CI)OR P-value
PD-L11–1305.53 (1.06–28.77)0.042
0
PD-L21–1303.12 (0.71–10.99)0.054
0
PD-1 positive lymphocytes in tumor0–10.87 (0.31–2.48)0.795
2–4
PD-1 positive lymphocytes in peritumoral stroma0–12.44 (0.43–13.91)0.316
2–4