Table 1.
Characteristics of patients
| Variable | No. (%) (n=566) |
|---|---|
| Age (yr) | |
| < 60 | 302 (53.4) |
| ≥ 60 | 264 (46.6) |
| Median (range) | 58 (22-85) |
| Gender | |
| Male | 382 (67.5) |
| Female | 184 (32.5) |
| Primary tumor T stage | |
| T1 | 5 (0.9) |
| T2 | 9 (1.6) |
| T3 | 467 (82.5) |
| T4 | 63 (11.1) |
| NA | 22 (3.9) |
| Primary tumor N stage | |
| N0 | 151 (22.7) |
| N1 | 197 (34.8) |
| N2 | 193 (34.1) |
| NA | 25 (4.4) |
| Tumor grade | |
| Well differentiated | 54 (9.5) |
| Moderately differentiated | 422 (74.6) |
| Poorly differentiated | 54 (9.5) |
| Mucinous | 2 (0.4) |
| Signet ring cell | 14 (2.5) |
| NA's | 20 (3.5) |
| No. of metastases | |
| 1 | 151 (26.7) |
| > 1 | 415 (73.4) |
| Size of largest metastasis (cm) | |
| ≤ 5 | 457 (80.7) |
| > 5 | 109 (19.3) |
| Distribution of liver metastasis | |
| Single | 244 (43.1) |
| Both | 322 (56.9) |
| CEA (ng/mL) | |
| ≤ 200 | 469 (82.9) |
| > 200 | 97 (17.1) |
| Disease-free interval (mo) | |
| < 12 | 152 (26.9) |
| ≥ 12 | 414 (73.1) |
| Fong's score | |
| 0-2 | 359 (63.4) |
| 0 (low) | 28 (4.9) |
| 1 | 128 (22.6) |
| 2 | 203 (35.9) |
| 3-5 | 207 (36.6) |
| 3 (high) | 147 (26.0) |
| 4 | 49 (8.7) |
| 5 | 11 (1.9) |
NA, not available; CEA, carcinoembryonic antigen.