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Table 1 Comparison of clinical outcomes between patients of the open and laparoscopic groups

From: Survival after laparoscopic and open surgery for colon cancer: a comparative, single-institution study

  Open resection (n =233) Laparoscopic resection (n = 227) P
Gender (M/F) 122/111 117/110 0.8*
Mean age (yr) 68.3 ± 0.9 70.0 ± 0.7 0.08§
Operative Mortality (30 days) 4 (1.7) 3 (1.3) 0.7*
Overall postoperative complications (%) 41 (17.6) 16 (7.0) <0.01*
Total grade I 5 (2.2) 0  
Wound infection 5 0  
Total grade II 24 (10.3) 9 (4.0)  
Urinary retention/infection 1 0  
Arrhythmia 5 4  
Pneumonia 4 2  
Ileus 10 1  
Deep vein thrombosis 3 0  
Cerebrovascular accident 1 1  
Pancreatitis 0 1  
Total Grade III 11 (4.7) 6 (2.6)  
Intestinal obstruction 4 1  
Gastrointestinal bleeding 3 2  
Anastomotic leak 4 3  
Total Grade IV 1 (0.4) 1(0.4)  
Cardiac failure 1 1  
Median hospital stay (days) 9 (5-16) 6 (3-10) <0.05§
Tumor site (%)    0.9*
Proximal tumors 130 (56.8) 127 (56.0)  
Distal tumors 103 (44.2) 100 (44.0)  
Tumor type (%)    0.7*
Adenocarcinoma 190 (81.5) 182 (80.2)  
Mucinous carcinoma 43 (18.5) 45 (19.8)  
Tumor differentiation (%)    0.3°
Well differentiated 25 (13.1) 16 (7.0)  
Moderately differentiated 152 (65.2) 155 (68.2)  
Poorly differentiated 13 (5.5) 11 (4.9)  
Tumor stage (%)    <0.01°
I 35 (15.0) 64 (30.7)  
II 123 (45.8) 82 (35.1)
III 75 (35.9) 81 (34.1)  
  1. *Fisher’s exact test.
  2. §Mann-Whitney test.
  3. °Chi-square test.