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Table 1 Clinicopathological features between the TSME and TME groups

From: The feasibility of laparoscopic TSME preserving the left colic artery and superior rectal artery for upper rectal cancer

Factors TSME, n = 46 TME, n = 138 P value
Age (years) 64.05 ± 9.59 63.50 ± 11.6 0.598
Gender    0.297
 Male 31 (67.4%) 81 (58.7%)  
 Female 15 (32.6%) 57 (41.3%)  
BMI (kg/m2) 22.59 ± 3.81 20.88 ± 4.33 0.588
Comorbidity
 Cardiovascular disease 10 (21.7%) 25 (18.2%) 0.603
 Respiratory disease 3 (5.5%) 8 (5.8%) 0.858
 Diabetes mellitus 9 (19.6%) 26 (18.2%) 0.930
Histological type    0.546
 Differentiated type 32 (69.6%) 100 (72.5%)  
 Undifferentiated type 14 (30.4%) 38 (27.5%)  
Tumor size (mm) 37.26 ± 14.75 36.62 ± 12.70 0.150
T category    0.482
 T1 2 (4.3%) 19 (13.8%)  
 T2 18 (39.1%) 50 (36.2%)  
 T3 14 (30.4%) 39 (28.3%)  
 T4 12 (26.1%) 30 (21.7%)  
N category    0.381
 N0 9 (19.6%) 35 (25.4%)  
 N1 30 (65.2%) 78 (56.5%)  
 N2 7 (15.2%) 25 (18.1%)  
Conversion to open surgery 0 1 (0.7%) 0.559
Operation time (min) 218.56 ± 35.85 201.13 ± 42.65 0.004
Blood loss (ml) 25.76 ± 27.87 18.00 ± 24.91 0.997
Lymph node dissection 19.43 ± 9.46 18.03 ± 7.43 0.024