Characteristic | Arm A: IRI+LV+5FU N = 441 (%) | Arm B: LV+5FU N = 432 (%) | P |
---|---|---|---|
Age (years) | Â | Â | 0.336 |
   Median | 65 | 65 |  |
   Range | 26 to 79 | 24 to 79 |  |
Sex | Â | Â | 0.892 |
   Female | 206 (47) | 199 (46) |  |
   Male | 235 (53) | 233 (54) |  |
Stage (Dukes) | Â | Â | 0.946 |
   B | 214 (48) | 211 (49) |  |
   C | 227 (52) | 221 (51) |  |
Primary tumor (T) | Â | Â | 0.891 |
   T1 and T2 | 29 (6) | 27 (6) |  |
   T3 and T4 | 405 (92) | 399 (93) |  |
   Unknown | 7 (2) | 6 (1) |  |
Regional lymph nodes (N) | Â | Â | 0.350 |
   N0 | 210 (48) | 208 (48) |  |
   N1 | 153 (35) | 134 (31) |  |
   N2 | 70 (16) | 82 (19) |  |
   Unknown | 8 (2) | 8 (2) |  |
Histology grade | Â | Â | 0.048 |
   I | 40 (9) | 47 (11) |  |
   II | 334 (76) | 296 (68) |  |
   III | 62 (14) | 84 (20) |  |
   Unknown | 5 (1) | 5 (1) |  |
Number of lymph nodes examined | Â | Â | 0.354 |
   Median | 14 | 14 |  |
   Range | 0 to 96 | 0 to 70 |  |
Number of lymph nodes involved* | Â | Â | 0.271 |
   Median | 2 | 3 |  |
   Range | 1 to 23 | 1 to 27 |  |
Site of disease | Â | Â | 0.640 |
   Cecum | 88 (20) | 95 (22) |  |
   Ascending colon | 67 (15) | 67 (16) |  |
   Transverse colon | 29 (7) | 30 (7) |  |
   Descending colon | 36 (8) | 44 (10) |  |
   Sigmoid | 218 (49) | 194 (45) |  |
   Unknown | 4 (1) | 2 (0.5) |  |
Perforation | Â | Â | 0.897 |
   Yes | 406 (92) | 398 (92) |  |
   No | 33 (7) | 31 (7) |  |
   Unknown | 2 (1) | 3 (1) |  |
Obstruction | Â | Â | 0.277 |
   Yes | 386 (88) | 365 (84) |  |
   No | 54 (12) | 64 (15) |  |
   Unknown | 1 (0.2) | 3 (1) |  |
*Only for stage C disease | Â | Â | Â |