Table 3 The operative details and pathological data
Factor | Group A (n = 84) (%) | Group B (n = 153) (%) | p-value |
|---|---|---|---|
Duration of surgery, min (range) | 232 (99–590) | 232 (123–590) | 0.318 |
Blood loss, ml (range) | 20 (2–669) | 12 (2–1143) | 0.353 |
Lymph node dissection, n (%) | Â | Â | 0.047 |
  D1 or D2 | 37 (44.0) | 47 (30.7) |  |
  D3 | 47 (56.0) | 106 (69.3) |  |
Completeness of resection, m (%) | Â | Â | 0.130 |
  R0 | 79 (94.0) | 143 (93.5) |  |
  R1 | 2 (2.4) | 0 (0.0) |  |
  R2 | 3 (3.6) | 10 (6.5) |  |
Conversion to open surgery, n (%) | 3 (3.6) | 8 (5.2) | 0.751 |
p T classification, n (%) | Â | Â | 0.881 |
  Tis | 13 (15.4) | 22 (14.5) |  |
  T1 | 11 (13.1) | 30 (19.9) |  |
  T2 | 14 (16.7) | 27 (17.9) |  |
  T3 | 36 (42.9) | 57 (37.7) |  |
  T4 | 10 (11.9) | 15 (10.0) |  |
p N classification, n (%) | Â | Â | 0.218 |
  N0 | 62 (73.8) | 99 (64.7) |  |
  N1 | 15 (17.9) | 43 (28.1) |  |
  N2 | 7 (8.3) | 11 (7.2) |  |
UICC p Stage, n (%) | Â | Â | 0.548 |
  Stage0 | 6 (7.1) | 8 (5.2) |  |
  StageI | 30 (35.7) | 57 (37.3) |  |
  StageII | 25 (29.8) | 30 (19.6) |  |
  StageIII | 19 (22.7) | 44 (28.7) |  |
  StageIV | 4 (4.8) | 13 (8.5) |  |