1. Patient characteristics.
| Variables | n (%) | P | |
| NOSE (N=50) | CLS (N=50) | ||
| BMI, body mass index; ASA, American Society of Anesthesiologists; NOSE, natural orifice specimen extraction; CLS, conventional laparoscopic surgery. | |||
Age (year) (
)
|
56.94±10.70 | 54.10±9.80 | 0.169 |
| Sex | 0.391 | ||
| Male | 32 (64) | 36 (72) | |
| Female | 18 (36) | 14 (28) | |
BMI (kg/m2) (
)
|
23.90±3.20 | 24.66±2.59 | 0.197 |
| ASA classification | 0.182 | ||
| I | 3 (6) | 7 (14) | |
| II | 47 (94) | 43 (86) | |
| Neoadjuvant therapy | 0.218 | ||
| No | 46 (92) | 42 (84) | |
| Yes | 4 (8) | 8 (16) | |
| History of abdominal surgery | 0.790 | ||
| No | 42 (84) | 41 (82) | |
| Yes | 8 (16) | 9 (18) | |
| Adjuvant therapy | 0.315 | ||
| No | 30 (60) | 25 (50) | |
| Yes | 20 (40) | 25 (50) | |
| Pathological TNM stage | 0.528 | ||
| I | 25 (50) | 24 (48) | |
| II | 6 (12) | 10 (20) | |
| III | 19 (38) | 16 (32) | |
Distance between tumor and the anal verge (cm) (
)
|
5.26±0.99 | 5.66±0.87 | 0.034 |