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Table 5 Multivariate Analysis of Variables Correlated with Various Clinical Endpoints

From: Grading of MRI–detected skull-base invasion in nasopharyngeal carcinoma with skull-base invasion after intensity-modulated radiotherapy

Endpoint

Item

HR

95% CI

P

DMFS

T3 vs. T4

1.741

1.039–2.916

0.035

N0–1 vs. N2–3

2.272

1.347–3.829

0.002

PFS

N0–1 vs. N2–3

1.621

1.107–2.374

0.013

Male vs. Female

0.620

0.392–0.980

0.041

LSBI vs. ESBI

1.523

1.006–2.306

0.047

OS

T3 vs. T4

1.910

1.079–3.382

0.026

  1. HR hazard ratio, CI confidence interval, ESBI extensive skull-base invasion, LSBI limited skull-base invasion, DMFS distant metastasis free survival, PFS progression free survival, OS overall survival