Table 2 Intraoperative and pathological characteristics of patients in the PPOI group and non-PPOI group
Non-PPOI group (n = 476) | PPOI group (n = 72) | p | |
|---|---|---|---|
Surgery approach [n (%)] | 0.632 | ||
Robotic-assisted | 270 (56.7%) | 43 (59.7%) | |
Laparoscopic | 206 (43.3%) | 29 (40.3%) | |
Diverting ileostomy [n (%)] | 204(42.9%) | 25(34.7%) | 0.192 |
Specimen extraction approaches [n (%)] | 0.526 | ||
Conventional extraction | 140 (86.1%) | 60 (83.3%) | |
NOSES | 66 (13.9%) | 12 (16.7%) | |
Operation time [median (IQR), min] | 155 (126.3–182.0) | 170 (140–201.5) | 0.026 |
Estimated blood loss [median (IQR), ml] | 50 (40–100) | 50 (50–100) | 0.085 |
Conversion [n (%)] | 8 (1.7%) | 4 (5.6%) | 0.06 |
Tumor differentiation [n (%)] | 0.577 | ||
Poor | 54 (11.3%) | 11 (51.3%) | |
Moderate | 368 (77.3%) | 52 (72.2%) | |
High | 54 (11.4%) | 9 (12.5%) | |
Tumor diameter [median (IQR), cm] | 4 (3–5) | 4 (3.5–5.5) | 0.118 |
Harvested lymph nodes [mean (SD)] | 16 (12–23) | 16 (12–24) | 0.637 |
Pathological T stage [n (%)] | 0.515 | ||
T1 | 49 (10.3%) | 9 (12.5%) | |
T2 | 93 (19.5%) | 13 (18.1%) | |
T3 | 269 (56.5%) | 36 (50.0%) | |
T4 | 65 (13.7%) | 14 (19.4%) | |
Pathological N stage [n (%)] | 0.691 | ||
N0 | 304 (63.9%) | 44 (61.1%) | |
N1 | 92 (19.3%) | 17 (23.6%) | |
N2 | 80 (16.8%) | 11 (15.3%) | |
Tumor stage [n (%)] | 0.900 | ||
I | 95 (20.0%) | 14 (19.4%) | |
II | 209 (43.9%) | 30 (41.7%) | |
III | 172 (36.1%) | 28 (38.9%) | |