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Table 3 Multivariate analysis of variables correlated with progression-free survival in 130 nasopharyngeal cancer patients treated with IMRT

From: Plasma uric acid and tumor volume are highly predictive of outcome in nasopharyngeal carcinoma patients receiving intensity modulated radiotherapy

Variable

HR

95% CI

P value

Tumor volume, ≥ 27 mL vs. < 27 mL

1.540

0.259-9.167

0.635

Post-treatment uric acid, ≤301 μmol/L vs. > 301 μmol/L

4.852

1.334-17.650

0.017

N category*

1.157

0.570-2.348

0.687

T category*

3.048

1.152-8.068

0.025

Age, ≤ 45 years vs. > 45 years

0.337

0.112-1.014

0.053

Sex, male vs. female

0.748

0.245-2.287

0.611

  1. HR, hazard ratio; CI, confidence interval; * According to the 7th edition of the American Joint Committee on Cancer/International Union Against Cancer staging system.