Table 1 Patients’ characteristics
Non-pIONM group (n = 23) | pIONM group (n = 29) | p | |
|---|---|---|---|
Sex, M/F | 12/11 | 26/3 | 0.003 |
Age, years | 64 (58, 73) | 63 (55, 74) | 0.768 |
Body mass index, kg m-2 | 26 (23, 31) | 26 (24, 31) | 0.775 |
ASA classification, I/II/III/IV | 2/15/5/1 | 1/16/12/0 | 0.308 |
pT-category (n) | 0.828 | ||
yT0 | 1 | 0 | |
T1 (yT1) | 3 (0) | 4 (2) | |
T2 (yT2) | 5 (2) | 5 (5) | |
T3 (yT3) | 10 (2) | 5 (8) | |
UICC classification (n) | 0.326 | ||
I | 9 | 14 | |
II | 8 | 4 | |
III | 2 | 5 | |
IV | 4 | 6 | |
Tumor site (n) | 0.365 | ||
Middle rectal third (< 6 cm from anal verge) | 17 | 19 | |
Lower rectal third (6 to ≤ 12 cm from anal verge) | 6 | 10 | |
Anterior quadrant involvement (n) | 19 | 20 | 0.211 |
Neoadjuvant CRT | 6 | 12 | 0.196 |
Open/laparoscopic | 21/2 | 24/5 | 0.318 |
Stapled anastomosis (n) | 0439 | ||
Colorectal | 18 | 21 | |
Coloanal | 5 | 8 | |
Reconstruction (n) | 0.101 | ||
End-to-End | 7 | 12 | |
Side-to-End | 8 | 14 | |
J-Pouch | 8 | 3 | |
Intraoperative blood loss, ml | 300 (100, 600) | 500 (50, 750) | 0.773 |
Blood transfusion, units | 0 (0, 0) | 0 (0, 0) | 0.768 |
Anastomotic leakage (n) a | 0 | 1 | 0.558 |
pR0, pR2 (n) | 19, 4 | 23, 6 | 0.525 |
pCRM negative, > 1 mm (n) | 23 | 29 | |
M.E.R.C.U.R.Y. Graduation (n) | 0.588 | ||
I°, complete | 22 | 27 | |
II°, nearly complete | 1 | 2 | |
Local recurrence | 0 | 0 k |