Table 4 Surgical parameters and tumor regression after treatment in the TME and CCRT + TME groups
Variable | TME group | CCRT + TME group | χ 2 | P |
|---|---|---|---|---|
Total (cases) | 94 | 90 | Â | Â |
Sphincter preservation (cases [%]) | Â | 0.036 | 0.849 | |
 Yes | 67 (71.3) | 63 (70.0) |  |  |
 No | 27 (28.7) | 27 (30.0) |  |  |
Time of surgery (hours) |  |  | −1.106 | 0.269 |
 Median | 3 | 3 |  |  |
 Range | 2-6 | 2-10 |  |  |
Blood loss during surgery (mL) |  | −0.387 | 0.698 | |
 Median | 100 | 100 |  |  |
 Range | 20-1,000 | 50-1,000 |  |  |
Hospital stay (days) |  |  | −0.540 | 0.589 |
 Median | 9 | 9 |  |  |
 Range | 6-33 | 6-98 |  |  |
Complications (cases [%]) | Â | Â | Â | Â |
 Urinary symptoms | 0 | 2 (2.2) |  | 0.238 |
 Anastomotic leakage | 8 (8.5) | 2 (2.2) |  | 0.101 |
 Obstruction | 1 (1.1) | 1 (1.1) |  | 1.000 |
 Temporary colostomy | 0 | 3 (3.3) |  | 0.115 |
 Wound infection | 4 (4.3) | 4 (4.4) |  | 1.000 |
Tumor regression gradea (cases [%]) | ||||
 4 | NA | 34 (37.8) |  |  |
 3 | NA | 23 (25.6) |  |  |
 2 | NA | 13 (14.4) |  |  |
 1 | NA | 20 (22.2) |  |  |
pTNM stage (cases [%]) | Â | Â | 3.202 | 0.202 |
 T1-2N0M0 | 16 (17.0) | 17 (18.9) |  |  |
 T3-4N0M0 | 39 (41.5) | 21 (23.3) |  |  |
 T1-4 N1-2 M0 | 39 (41.5) | 20 (22.2) |  |  |
pCR (cases [%]) | NA | 32 (35.6) | Â | Â |