The prognostic value of location and size change of pathological lymph nodes evaluated on CT-scan following radiotherapy in head and neck cancer

Table 3 Impact of PLN localization on metastatic risk

Levels	Levels	Hazard ratio (95% CI)	p-value univariate analysis	p-value multivariate analysis^a
I-III	IV-V	0.325 (0.165;0.639)	0.0011	0.0002
IV-V	VI-VII	0.461 (0.127;0.745)	0.0852	0.0302

Hazard Ratio <1 (>1) means lower (higher) risk for lower levels
Abbreviations: CI confidence interval, PLN pathological lymph node. ^aCorrected for T stage, N stage, pre-radiotherapy diameter, necrosis, calcifications, extra-capsular spread and HPV

ISSN: 1470-7330