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Table 5 Multivariable analysis for patients prognosis in different risk stratifications

From: Subdivision of de-novo metastatic nasopharyngeal carcinoma based on tumor burden and pretreatment EBV DNA for therapeutic guidance of locoregional radiotherapy

 

Low risk

Intermediate risk

High risk

Characteristic

HR

95%CI

P value

HR

95%CI

P value

HR

95%CI

P value

Age (years)

 ≤ 47

Reference

  

Reference

  

Reference

  

 > 47

1.311

0.724–2.375

0.371

1.403

0.870–2.262

0.165

1.051

0.745–1.480

0.778

Gender

 Male

Reference

  

Reference

  

Reference

  

 Female

0.486

0211–1.118

0.089

0.657

0.361–1.194

0.168

1.527

0.948–2.461

0.082

Smoking

 No smoking

Reference

  

Reference

  

Reference

  

 Smoking

1.219

0.665–2.235

0.522

1.130

0.693–1.843

0.632

1.266

0.883–1.816

0.199

Family history

 No

Reference

  

Reference

  

Reference

  

 Yes

0.748

0.246–2.278

0.609

0.462

0.157–1.355

0.160

1.057

0.572–1.955

0.859

T stage

 T1-T2

Reference

  

Reference

  

Reference

  

 T3-T4

0.723

0.349–1.499

0.383

1.110

0.605–2.036

0.737

0.843

0.526–1.349

0.475

N stage

 N0-N1

Reference

  

Reference

  

Reference

  

 N2-N3

2.318

1.098–4.891

0.027

1.051

0.589–1.875

0.867

1.367

0.860–2.175

0.186

No. of metastatic organs

 1

  

  

Reference

  

 > 1

1.518

1.032–2.234

0.034

No. of metastatic tumor

 ≤ 5

  

  

Reference

  

 > 5

1.564

0.955–2.562

0.076

EBV-DNA (Copies/ml)

 ≤ 25,000

  

  

Reference

  

 > 25,000

1.127

0.745–1.707

0.571

Chemotherapy regimens

 TPF

Reference

  

Reference

  

Reference

  

 TP

0.717

0.294–1.749

0.465

0.770

0.386–1.537

0.459

0.818

0.500–1.341

0.426

 PF

0.814

0.336–1.971

0.648

0.619

0.295–1.300

0.205

0.962

0.584–1.583

0.878

 GP

0.922

0.379–2.241

0.858

0.925

0.486–1.759

0.812

0.700

0.417–1.174

0.176

 Others

1.696

0.439–6.550

0.444

0.859

0.316–2.333

0.766

0.688

0.258–1.837

0.455

LRRT

 Non-LRRT

Reference

  

Reference

  

Reference

  

 LRRT

0.490

0.232–0.960

0.042

0.582

0.357–0.947

0.029

0.718

0.499–1.033

0.074