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Table 3 Patient characteristics after propensity score matching

From: Clinicopathological characteristics and prognosis of signet ring cell carcinoma of the gallbladder

  SRC (n = 245) Non-SRC (n = 245) P Value
Age, years    
 ≤ 60 56 (22.9%) 49 (20.0%) 0.441
 > 60 189 (77.1%) 196 (80.0%)  
Sex    
Male 59 (24.1%) 62 (25.3%) 0.753
Female 186 (75.9%) 183 (74.7%)  
Race    
White 194 (79.2%) 181 (73.9%) 0.097
Black 28 (11.4%) 29 (11.8%)  
Other 23 (9.4%) 35 (11.3%)  
AJCC stage    
I–II 110 (44.9%) 110 (44.9%) 1.000
III–IV 73 (29.8%) 73 (29.8%)  
Unknown 62 (25.3%) 62 (25.3%)  
Histologic grade    
Well-moderate 18 (7.3%) 18 (7.3%) 1.000
Poor-undifferentiated 227 (92.7%) 227 (92.7%)  
Surgery    
Yes 219 (89.4%) 220 (89.8%) 0.882
No 26 (10.6%) 25 (10.2%)  
Radiotherapy    
Yes 38 (15.5%) 30 (12.2%) 0.296
No 207 (84.5%) 215 (87.8%)  
Chemotherapy    
Yes 85 (34.7%) 91 (37.1%) 0.572
No 160 (65.3%) 154 (62.9%)  
Year of diagnosis    
1975–2009 142 (58.0%) 60 (24.5%)  < 0.001
2010–2016 103 (42.0%) 185 (75.5%)  
Marital status    
Married 127 (51.8%) 119 (48.6%) 0.471
Unmarried 118 (48.2%) 126 (51.4%)  
  1. SRC signet ring cell carcinoma, AJCC American Joint Committee on Cancer