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Table 1 Patient characteristics of each group

From: Serum metabolomic profile as a means to distinguish stage of colorectal cancer

   Liver-only Extra-hepatic P
  Locoregional CRC: group 1 (N = 42) metastases: group 2 (N = 45) metastases: group 3 (N = 25) Group 1 versus group 2 Group 2 versus group 3 Locoregional CRC versus all stage IV
Age (years) 72 ± 11 67 ± 13 63 ± 13 0.05 0.19 0.004
Gender     0.06 0.50 0.39
   Male 21 (50) 31 (69) 15 (60)    
   Female 21 (50) 14 (31) 10 (40)    
Bowel prep 39 (100) 45 (100) 25 (100) NS NS NS
Stage       
   Stage II 21 0 0    
   Stage III 21 0 0    
   Stage IV 0 45 25    
Any chemotherapy within 3 months 5 (21) 16 (36) 9 (36) 0.02 0.79 0.02
Specific chemotherapeutic agents       
   5-FU 5 (100) 15 (94) 7 (78)    
   Oxaliplatin 1 (20) 7 (44) 4 (44)    
   Irinotecan 0 (0) 10 (63) 2 (22)    
   Bevacizumab 0 (0) 2 (13) 0 (0)    
   Other chemotherapy 1 (20) 1 (6) 2 (22)    
  1. Numbers in brackets represent percent (%). 5-FU, 5-fluorouracil.