Table 2 Cox univariate and multivariate analyses of prognostic factors for the overall survival of non-metastatic nasopharyngeal carcinoma patients after treatment

Sex

0.023

1.228

1.093–1.363

0.163

Age

<0.001

1.572

1.478–1.666

<0.001

Smoking history

0.025

0.957

0.845–1.070

0.833

Alcohol consumption

0.048

1.056

0.930–1.182

0.279

BMI

0.014

1.164

1.087–1.241

0.004

Hemoglobin

0.079

Not included in the multivariate analysis

NLR

<0.001

1.324

1.225–1.423

0.001

Platelet count

0.015

1.165

1.048–1.282

0.366

LDH level

<0.001

1.332

1.273–1.391

<0.001

ALP level

0.001

1.235

1.126–1.344

0.185

Histological type

0.032

0.986

0.538–1.434

0.082

T stage

<0.001

1.264

1.212–1.316

<0.001

N stage

<0.001

1.457

1.399–1.515

<0.001

TNM stage

<0.001

Excluded due to collinearity

VCA-IgA titer

0.099

Not included in the multivariate analysis

EA-IgA

0.001

1.224

1.100–1.348

0.179

Anti-DNase titer

0.019

1.155

1.022–1.288

0.43

Neoadjuvant chemotherapy

<0.001

1.209

1.111–1.308

0.043

Concomitant chemotherapy

0.022

1.167

1.060–1.274

0.424

Adjuvant chemotherapy

0.035

1.747

1.238–2.256

0.37

Radiation dose

0.002

1.415

1.282–1.548

0.009