Table 4. Multivariate Cox proportional hazards regression analysis.

Characteristic	Hazard ratio	95% CI	P-value
Age (≥60 vs. < 60 years)	1.696	0.927-3.104	0.087
T stage(T3-4 vs. T1-2)	2.768	1.603-4.779	< 0.001
N stage (N2–3 vs. N0–1)	2.165	1.245-3.765	0.006
Clinical stage (III–IVB) vs. (I–II)	9.534	1.998-45.498	0.005
PLT (>266 vs. ≤266) (×109/L)	2.017	1.329-3.060	0.001
MPV (>10.6vs.≤10.6) fL	0.645	0.404-1.028	0.065
PDW (>16.3 vs. ≤16.3) fL	2.362	1.554-3.590	< 0.001
PLR (>130.22 vs. ≤130.22)	1.523	0.933-2.487	0.092
EBV DNA (high vs. low) (copies/mL)	1.619	1.024-2.560	0.039

Abbreviations: see Table 1.