Table 3.
Tumor Characteristics by Procedure Type
| Characteristic | Laparoscopic (n = 1,280) |
Open (n=2,113) |
Total (n=3,393) |
p Value |
|---|---|---|---|---|
|
| ||||
| T Stage | <0.0001 | |||
| Missing, n | 0 | 1 | 1 | |
| T1 or T2, n (%) | 243 (19.1) | 265 (12.5) | 508 (15.0) | |
| T3, n (%) | 908 (70.9) | 1580 (74.8) | 2488 (73.3) | |
| T4, n (%) | 129 (10.1) | 267 (12.6) | 396 (11.7) | |
|
| ||||
| Lymph node involvement, n (%) | 0.7185 | |||
| 1 – 3 | 750 (58.6) | 1254 (59.3) | 2004 (59.1) | |
| >=4 | 530 (41.4) | 859 (40.7) | 1389 (40.9) | |
|
| ||||
| No. nodes examined, mean (SD) | 20.6 (11.5) | 19.5 (11.0) | 19.9 (11.2) | 0.0006 |
|
| ||||
| Tumor location, n (%) | ||||
| Cecum | 313 (24.5) | 453 (21.5) | 766 (22.6) | 0.0428 |
| Ascending colon | 247 (19.3) | 382 (18.1) | 629 (18.6) | 0.3807 |
| Hepatic flexure | 72 (5.6) | 111 (5.3) | 183 (5.4) | 0.6452 |
| Transverse colon | 87 (6.8) | 221 (10.5) | 308 (9.1) | 0.0003 |
| Splenic flexure | 47 (3.7) | 104 (4.9) | 151 (4.5) | 0.0863 |
| Descending colon | 63 (4.9) | 157 (7.4) | 220 (6.5) | 0.0040 |
| Sigmoid colon | 510 (39.9) | 822 (39.0) | 1332 (39.3) | 0.5960 |