Table 3. Result of the univariate analysis of overall survival in NPC patients.

Characteristic	Hazard ratio	95% CI	P-value
Sex (male vs. female)	1.435	0.925-2.227	0.107
Age (≥60 vs. < 60 years)	1.719	1.035-2.852	0.036
Smoking (yes vs. no)	1.448	0.985-2.129	0.060
BMI (kg/m2) (>23.7 vs. ≤23.7)	1.335	0.917-1.943	0.132
Diabetes (yes vs. no)	1.767	0.856-3.647	0.124
Family history of NPC (yes vs. no)	0.986	0.563-1.728	0.962
KPS (≤80 vs. > 80)	1.168	0.805-1.696	0.414
Undifferentiated cancer (yes vs. no)	0.948	0.652-1.380	0.782
T stage(T3-4 vs. T1-2)	4.786	2.963-7.728	<0.001
N stage (N2–3 vs. N0–1)	4.099	2.536-6.651	<0.001
Clinical stage (III–IVB) vs. (I–II)	43.441	10.284 – 183.507	<0.001
CCRT (no vs. yes)	0.936	0.620-1.413	0.753
IMRT (no vs. yes)	1.292	0.839-1.988	0.245
PLT (>266 vs. ≤266) (×109/L)	1.979	1.361-2.877	<0.001
MPV (>10.6vs.≤10.6) fL	0.385	0.257-0.577	<0.001
PDW (>16.3 vs. ≤16.3) fL	2.986	2.030 – 4.394	<0.001
PLR (>130.22 vs. ≤130.22)	2.890	1.835 – 4.553	<0.001
EBV DNA (high vs. low) (copies/mL)	2.192	1.418 – 3.388	<0.001

Abbreviations: see Table 1.