Table 1.
Baseline characteristics of 5378 patients with stage I‐III colon cancer according to side of presentation
| Characteristics | Right N = 2465 (46%) | Left N = 2913 (54%) | Significance Chi‐Square |
|---|---|---|---|
| Age | |||
| Median (IQR) | 70 (61‐77) | 66 (58‐79) | P < 0.001* |
| Sex | |||
| M | 1193 (48) | 1652 (57) | P < 0.001 |
| F | 1272 (52) | 1261 (43) | |
| Grade | |||
| 1 | 255 (10) | 349 (12) | P < 0.001 |
| 2 | 1614 (67) | 2234 (78) | |
| 3/4 | 550 (23) | 285 (10) | |
| Lymphovascular invasion | |||
| ‐ | 1785 (72) | 2215 (76) | P = 0.002 |
| + | 680 (28) | 698 (24) | |
| Perineural invasion | |||
| ‐ | 2292 (93) | 2666 (92) | P = 0.047 |
| + | 173 (7) | 247 (9) | |
| Stage | |||
| I | 219 (9) | 307 (11) | P = 0.008 |
| II | 948 (39) | 1006 (35) | |
| III | 1286 (52) | 1556 (54) | |
| Lymph nodes removed | |||
| >12 | 1458 (60) | 1262 (45) | P < 0.001 |
| <12 | 958 (40) | 1542 (55) | |
| ECOG | |||
| 0‐1 | 2203 (89) | 2607 (90) | P = 0.883 |
| 2+ | 262 (11) | 306 (11) | |
| Adjuvant chemotherapy | |||
| No | 1332 (54) | 1374 (47) | P < 0.001 |
| Yes | 1133 (46) | 1539 (53) | |
Abbreviations: present: “+”; absent: “‐”; female: F; male: M; IQR: interquartile range.
*
Wilcoxon‐rank sum.