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Table 1 Selected demographic and medical parameters and their association with 5-year overall survival (OS) and modes of surgery

From: Endoscopic obstruction is associated with higher risk of acute events requiring emergency operation in colorectal cancer patients

   Survival probability Emergency surgery
Parameter No. (cases) (%) 5-year OS (%) Log-rank p-value (cases) (%) p-value
All 329 64.1 - 22 (7) -
Sex    0.5   0.73
male 191 (58) 62.4   12 (6)  
female 138 (42) 66.5   10 (7)  
Age    0.51   0.35
< 60 years 136 (41) 66.7   7 (5)  
≥ 60 years 193 (59) 62.3   15 (8)  
Co-morbidity    0.71   0.97
Absent 193 (59) 65.5   13 (7)  
Present 136 (41) 61.7   9 (7)  
Serum CEA    < 0.01   0.32
< 5 ng/ml 144 (59) 71.1   8 (6)  
≥ 5 ng/ml 102 (41) 54.8   9 (9)  
Tumor site    0.32   0.79
Rectum 94 (29) 56.8   5 (5)  
Colon 223 (68) 66.8   16 (7)  
T    0.02   0.18
T0-2 47 (14) 75.9   1 (2)  
T3-4 282 (86) 62   22 (8)  
N    < 0.01   0.34
N0 171 (53) 78.7   9 (5)  
N1-2 152 (47) 49.4   12 (8)  
M    < 0.01   0.02
M0 281 (85) 72.1   15 (5)  
M1 48 (15) 18.5   7 (15)  
Tumor differentiation    0.16   0.77
Well/Moderate 279 (92) 64.9   18 (7)  
Poor 25 (8) 58.6   2 (8)  
Lymphovascular invasion    < 0.01   0.12
Absent 276 (84) 69   16 (6)  
Present 51 (16) 35.3   6 (12)  
Lymph node ratio    < 0.01   0.53
< 0.35 273 (86) 72.7   17 (6)  
≥ 0.35 46 (14) 23.6   4 (9)  
Endoscopic obstruction    0.73   < 0.01
Absent 120 (37) 67.2   2(2)  
Present 209 (64) 62.3   20 (10)  
Mode of operation    < 0.01   -
Elective 307 (93) 66.4   -  
Emergency 22 (7) 32.3   -  
  1. CEA carcinoembryonic antigen.