Table 1.
Patients and tumor characteristics.
| Baseline Characteristics | Total n = 106 |
Patients Aged 50–69 Years N = 49 (46.2%) |
Patients Aged ≥ 70 Years N = 57 (53.8%) |
p-Value | |
|---|---|---|---|---|---|
| Age (years) | Median | 71.5 | 58 | 80 | <0.001 |
| IQR | 21 | 9 | 11 | ||
| Gender | Male | 44 (41.5) | 30 (28.3) | 14 (13.2) | <0.001 |
| Female | 62 (58.5) | 19 (17.9) | 43 (40.5) | ||
| American Society of Anaesthesiologists score | <2 | 78 (73.6) | 39 (36.7) | 39 (36.7) | 0.193 |
| ≥3 | 28 (26.4) | 10 (9.4) | 18 (16.9) | ||
| Comorbidities | Cardiovascular | 42 (39.6) | 14 (13.2) | 28 (26.4) | 0.031 |
| Pulmonary | 16 (15.1) | 6 (5.6) | 10 (9.4) | 0.447 | |
| Diabetes | 19 (17.9) | 7 (6.6) | 12 (11.3) | 0.365 | |
| Localization | Rectum | 19 (17.9) | 10 (9.4) | 9 (8.4) | 0.536 |
| Colon | 87 (82.1) | 39 (36.7) | 48 (45.2) | ||
| Specified localization | Rectum | 19 (17.9) | 10 (9.4) | 9 (8.4) | 0.296 |
| Right colon | 39 (36.4) | 17 (16) | 22 (20.7) | ||
| Transverse colon | 7(6.2) | 3 (2.8) | 4 (3.7) | ||
| Left colon | 42(39.5) | 21(19.8) | 21(19.8) | ||
| Lymph node | N+ | 57(53.7) | 25(23.5) | 32(30.1) | 0.389 |
| N− | 46(46.3) | 25(23.5) | 21(19.8) | ||
| Synchronous metastasis | Stage IVA (liver only) | 18 (16.9) | 10 (9.4) | 8 (7.5) | 0.383 |
| Stage IVA (lung only) | 4 (3.7) | 3 (2.8) | 1 (0.9) | 0.334 | |
| Stage IVB | 5 (4.7) | 4 (3.7) | 1 (0.9) | 0.179 | |
| Serum carcinoembryonic antigen (µ/L) | Median | 8.5 | 7 | 12 | <0.001 |
| IQR | 29 | 29 | 29 | ||
IQR: interquartile range.