Skip to main content

Table 2 Chi-square test of re-RT and without re-RT for locoregional recurrent ESCC before and after matching

From: Survival benefit of re-irradiation in esophageal Cancer patients with Locoregional recurrence: a propensity score-matched analysis

Variables Before matching After matching
With re-RT (n) Without re-RT (n) P With re-RT (n) Without re-RT (n) P
Age (years)    1.000    1.000
  < 65/≥65 26/13 32/16   21/12 21/12  
KPS    0.770    0.802
 70–80/>80 15/24 17/31   13/20 14/19  
Gender    0.572    0.580
 Male/Female 28/11 37/11   23/10 25/8  
Smoking    0.619    0.796
 Yes/No 15/24 16/32   12/21 11/22  
Alcohol consumption    0.679    1.000
 Yes/No 6/33 9/39   5/28 5/28  
Primary tumor location    0.583    0.802
 Upper/Middle and lower thoracic 14/25 20/28   14/19 13/20  
Initial clinical stage    0.003    0.284
 I + II/III 18/21 8/40   12/21 8/25  
Surgery in the initial treatment    0.488    0.392
 Yes/No 6/33 5/43   2/31 4/29  
Chemotherapy in the initial treatment    0.582    0.806
 Yes/No 18/21 25/23   16/17 17/16  
Radiation dose in the initial treatment (Gy)    0.101    0.213*
  ≤ 50/> 50 8/31 4/44   5/28 2/31  
Recurrence-free interval (months)    0.187    0.215
 Median (range) 27(4163) 12.5(3168)   27(5163) 12(3144)  
  ≤ 12/> 12 14/25 24/24   12/21 17/16  
  1. Abbreviation: Re-RT Re-irradiation, KPS Karnofsky performance status. *:Fisher's exact tests