Variable | Laparoscopic group (n = 12) | Open group (n = 13) | P value |
operation time (min) | 230.00 ± 28.60 | 213.85 ± 33.55 | 0.210 |
bleeding volume (ml) | 89.58 ± 32.99 | 133.46 ± 44.51 | 0.011 |
number of lymph nodes (n) | 22.25 ± 6.48 | 17.53 ± 3.75 | 0.035 |