A novel dosimetric metrics-based risk model to predict local recurrence in nasopharyngeal carcinoma patients treated with intensity-modulated radiation therapy

Table 3 Univariate analysis of LRFS by log-rank test according to clinical factors

Variable	HR	95% CI	P value
Age (≤ 46 vs ˃ 46)	1.083	0.586–2.002	0.799
Gender (Male vs Female)	0.920	0.527–1.739	0.816
T classification (T3-4 vs T1-2)	1.477	0.783–2.786	0.229
N classification (N2-3 vs N0-1)	0.958	0.527–1.739	0.887
IC (Yes vs No)	0.801	0.315–2.038	0.641
CC (Yes vs No)	0.637	0.328–1.237	0.183
AC (Yes vs No)	1.350	0.740–2.463	0.328

LRFS, local recurrence free survival; HR, hazard ratio; CI, confidence interval; IC, induction chemotherapy; CC, concurrent chemotherapy; AC, adjuvant chemotherapy

ISSN: 1748-717X