Table 1 Comparison of general conditions between OS and C groups
|  | OS group (n = 35) | C group (n = 36) |
|---|---|---|
Age (year), mean ± SD | 40 ± 7 | 39 ± 8 |
Height (cm), mean ± SD | 161 ± 5 | 158 ± 15 |
Body weight (kg), mean ± SD | 64 ± 11 | 65 ± 19 |
ASA (1/2) | 19/16 | 21/15 |
Smoking history, n (%) | 6 (17.1) | 4 (11.1) |
History of previous abdominal surgery, n (%) | 16 (45.7) | 15 (41.7) |