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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