Table 1. Demographic characteristics of the 11,397 colorectal patients underwent surgical resection.
| Variable | Rectal cancer (N = 5,864) | Colon cancer (N = 5,533) |
|---|---|---|
| Age, (year) (mean ± SD) | 59.66 ± 11.95 | 60.38 ± 13.30 |
| Sex | ||
| Men (%) | 3,544 (60.4) | 3,232 (58.9) |
| Women (%) | 2,320 (39.6) | 2,275 (41.1) |
| Geographic region | ||
| Southern (%) | 4,471 (76.2) | 4,192 (75.8) |
| Northern (%) | 1,293 (23.8) | 1,340 (24.2) |
| Surgery type | ||
| Open surgery (%) | 2,746 (46.8) | 3,466 (62.6) |
| Laparoscopic surgery (%) | 3,118 (53.2) | 2,067 (37.4) |
| Anesthesia | ||
| General anesthesia (%) | 5,309 (90.9) | 5,196 (90.6) |
| Regional anesthesia (%) | 555 (9.1) | 337 (9.4) |
| ACCI | ||
| Mean ± SD | 3.06 ± 1.91 | 3.40 ± 2.27 |
| 0–1 (%) | 1,103 (18.8) | 1,022 (18.5) |
| 2–3 (%) | 2,830 (48.3) | 2,238 (40.4) |
| 4–5 (%) | 1,385 (23.6) | 1,509 (27.3) |
| ≥ 6 (%) | 546 (9.3) | 764 (13.8) |
ACCI: Age-adjusted Charlson comorbidity index.