Table 1.
Characteristics of patients.
| Characteristic | Training cohort | Testing cohort | External validation cohort |
|---|---|---|---|
| No. of patients | 241 | 104 | 388 |
| Age* (years) | 59.2 ± 10.5 (19–82) |
58.9 ± 9.8 (28–80) |
60.4 ± 9.9 (21–83) |
| Gender | |||
| Male | 99 (41.1) | 53 (51.0) | 200 (51.5) |
| Female | 142 (58.9) | 51 (49.0) | 188 (48.5) |
| Site | |||
| Gastric | 192 (79.7) | 86 (82.7) | 236 (60.8) |
| Non-gastric | 49 (20.3) | 18 (17.3) | 152 (39.2) |
| Size (cm) | |||
| <2 | 44 (18.3) | 20 (19.2) | 19 (4.9) |
| 2.1–5.0 | 122 (50.6) | 53 (51.0) | 148 (38.1) |
| 5.1–10.0 | 59 (24.5) | 25 (24.0) | 138 (35.6) |
| >10 | 16 (6.6) | 6 (5.8) | 83 (21.4) |
| Mitotic count | |||
| ≤5/50 | 193 (80.1) | 82 (78.8) | 247 (63.7) |
| 6–10 | 27 (11.2) | 12 (11.5) | 73 (18.8) |
| >10 | 21 (8.7) | 10 (9.6) | 68 (17.5) |
Unless otherwise specified, data in parentheses are percentages.
*Numbers in parentheses are the range.