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Table 2 Multivariate cox regression analysis of overall survival (OS) rate and local control (LC) rate of the patients

From: A retrospective study of californium-252 neutron brachytherapy combined with EBRT versus 3D-CRT in the treatment of esophageal squamous cell cancer

Factors OS rate LC rate
  HR (95 % CI) P value HR (95 % CI) P value
Tumor length (≤5 cm vs >5 cm) 0.81 (0.68–0.96) 0.014 0.73 (0.58–0.92) 0.007
T stage (T1 + T2 vs T3 + T4) 0.84 (0.63–1.13) 0.257 0.85 (0.58–1.24) 0.398
N stage (N0 vs N1) 0.89 (0.73–1.09) 0.260 0.90 (0.68–1.18) 0.432
AJCC Stage (I + II vs III) 0.62 (0.52–0.74) <0.0001 0.66 (0.52–0.84) 0.001
Treatment modality (3D–CRT vs NBT + EBRT) 1.27 (1.07–1.20) 0.005 1.26 (1.01–1.58) 0.043
  1. Abbreviations: HR hazard ratio, CI confidence interval, EBRT + NBT external beam radiotherapy plus neutron brachytherapy, 3D-CRT three dimensional conformal radiotherapy