Table 2 Comparison of surgical safety and radicalization
| Â | TPAISR n = 57 (%) | TAISR n = 142 (%) | PAISR n = 36 (%) | P value |
|---|---|---|---|---|
Postoperative complications | 17 (29.8) | 38 (26.8) | 4 (11.1) | 0.100 |
Anastomotic leakage | 1 (1.8) | 4 (2.8) | 1 (2.8) | 1.000e |
Intestinal obstruction | 3 (5.3) | 3 (2.1) | 0 (0.0) | 0.341e |
Anastomotic stenosis | 1 (1.8) | 1 (0.7) | 0 (0.0) | 0.636e |
Incision infection | 0 (0.0) | 1 (0.7) | 0 (0.0) | 1.000e |
Others | 12 (21.1) | 29 (24.4) | 3 (8.3) | 0.227 |
Clavien-Dindo Complication grade | ||||
 Grade I | 9 (15.8%) | 13 (9.2%) | 3 (8.3%) | 0.413 |
 Grade II | 8 (14.0%) | 12 (8.5%) | 1 (2.8%) | 0.192 |
 Grade III | ||||
  III-a | 0 | 1 (0.7) | 0 | 1.000 e |
  III-b-IV | 0 | 0 | 0 | NA |
Positive distal margin | 1 (1.8) | 2 (1.4) | 1 (2.8) | 0.785e |
CRMI | 2 (3.5) | 2 (1.4) | 0 (0.0) | 0.352e |
Distal cutting margin (cm) | 1.5 (1.5, 1.9) | 1.5 (1.5, 2.5) | 1.5 (1.0–1.5) | 0.065 |
Lymph nodes harvested, median (IQR) | 16 (11, 20) | 15 (12, 20) | 16 (12, 20) | 0.829 |
Histological differentiation | 0.042e | |||
 Well | 0 (0.0) | 1 (0.7) | 3 (8.3) |  |
 Moderate | 57 (100) | 139 (97.9) | 33 (91.7) |  |
 Poor | 0 (0.0) | 2 (1.4) | 0 (0.0) |  |
pT category | 0.140 | |||
 T0 | 9 (15.8) | 25 (17.6) | 8 (22.5) |  |
 T1 | 9 (15.8) | 17 (12.0) | 1 (2.8) |  |
 T2 | 22 (38.6) | 53 (37.3) | 21 (58.3) |  |
 T3 | 17 (29.8) | 47 (33.1) | 6 (16.7) |  |
pN category | 0.502e | |||
 N0 | 42 (73.7) | 99 (69.7) | 37 (75.0) |  |
 N1 | 12 (21.1) | 38 (26.8) | 6 (16.7) |  |
 N2 | 3 (5.3) | 5 (3.5) | 3 (8.3) |  |
pTNM stagea | 0.054e | |||
 0 | 8 (14) | 20 (14.1) | 8 (22.2) |  |
 I | 23 (40.4) | 54 (38.0) | 18 (52.8) |  |
 II | 11 (19.3) | 25 (17.6) | 0 (0.0) |  |
 III | 15 (26.3) | 43 (30.3) | 9 (25.0) |  |
Hospitalization, days | 8.0 (7.0, 9.0) | 9.0 (8.0, 9.0) | 8.0 (7.0, 8.0) | 0.066 |