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Table 2 Prognostic factors by log-rank test and univariate survival analysis

From: Salvage radiotherapy in patients with local recurrent esophageal cancer after radical radiochemotherapy

Characteristics Number Median OS(months) Log-rank test p value Univariate analysis p value
Gender     
Female 59 18 0.975 0.573
Male 55 16
Age (years)     
<60 33 15 0.536 0.310
≥60 81 18
Location     
Upper 73 19 0.001 0.02
Middle 37 15
Lower 4 12.3
Initial length (cm)     
≤5 cm 72 17 0.806 0.381
>5 cm 42 17.5
Initial ECOG-PS     
0-I 98 17.5 0.150 0.647
II 15 13
III 1 12
Initial clinical stage     
I-II 76 21 0.0002 0.07
III 38 10
TRS time     
≤12 months 62 12 0.0001 0.0002
>12 months 52 26
Group     
SR 55 20 0.003 0.001
NSR 59 14