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Table 1 Clinical characteristics of pre- and post-matched patients

From: Does chemoradiotherapy benefit elderly patients with esophageal squamous cell cancer? A propensity-score matched analysis on multicenter data (3JECROG R-03A)

CharacteristicsPre-PSMPost-PSM
CRTRT-aloneχ2PCRTRT-aloneχ2P
Gender (n)  0.1410.708  4.6070.042
 Male84366  7691  
 Female49230  4126  
Mean age (year)73.3 ± 3.5876.2 ± 4.39 < 0.00173.8 ± 3.773.9 ± 3.8 0.875
ECOG (n)  29.776< 0.001  6.8380.078
 015208  1523  
 146156  4238  
 266203  5746  
 3629  310  
Preexisting chronic comorbidities (n)
 Hypertension
  yes332074.8450.03232280.3590.654
  no100389  8589  
 Cardiovascular disease
  yes16780.1080.88614222.1010.204
  no117518  10395  
 Pulmonary disease
  yes14570.1150.74713201.7290.26
  no119539  10497  
 Diabetes        
  yes12690.7180.44911130.1860.83
  no121527  106104  
Tumor location (n)  10.2040.037  4.7280.316
 Cervical1019  94  
 Upper40137  3039  
 Middle51288  4647  
 Lower32150  3226  
 EGJ02  01  
Mean primary tumor length (cm)5.50 ± 2.305.38 ± 2.27 0.5645.5 ± 2.15.7 ± 2.4 0.426
Mean primary tumor volume (cm3)50.82 ± 34.644.91 ± 33.14 0.25550.2 ± 35.452.8 ± 32.4 0.56
Clinical T stage (n)  8.9590.03  3.4110.333
 T1010  03  
 T214113  1310  
 T356245  5352  
 T463228  5152  
Clinical N stage (n)  0.140.769  0.0181
 N051239  4645  
 N182357  7172  
Clinical M stage (n)  13.2870.001  0.1860.83
 M0114564  106104  
 M11932  1113  
Primary T GTV Dose (cGy)6120 ± 2536067 ± 334 0.0846105 ± 2496052 ± 389 0.212
  1. Cardiovascular disease: coronary artery disease [CAD] and atrial fibrillation [AF]
  2. Pulmonary disease: chronic obstructive pulmonary disease [COPD] and asthma
  3. EGJ Esophagogastric junction
  4. PSM Propensity score matching