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Table 2 Multivariate analysis of risk factors associated with grade ≥ 2 radiation-associated facial lymphedema after CCRT

From: Radiotherapy dose–volume parameters predict facial lymphedema after concurrent chemoradiation for nasopharyngeal carcinoma

Clinical and dosimetric characteristic

HR (95% CI)

P value*

N stage (0–1 vs. 2–3)

1.392 (0.744–2.357)

0.270

Mean dose (Gy) to level IV

1.238 (1.084–1.414)

0.002**

Mean dose (Gy) to level I–VII

1.384 (1.121–1.708)

0.003**

  1. HR hazard ratio, CI confidence interval
  2. *P value were calculated by backward Cox hazard model
  3. **Statistically significant P value < 0.05
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Radiation Oncology

ISSN: 1748-717X

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