Table 1. The demographic and clinicopathological variables of the GD-NEN training set and SEER validation set.
|
GD-NENs training set (n=1183) |
SEER validation set (n=10 236) |
|||
|---|---|---|---|---|
| Variable | No. of patients | % | No. of patients | % |
| Median age (years) | 51.0±13.9 | 61.0±14.1 | ||
| Gender | ||||
| Male | 715 | 60.4 | 5227 | 51.1 |
| Female | 468 | 39.6 | 5009 | 48.9 |
| Functional | ||||
| No | 979 | 82.8 | NA | NA |
| Yes | 204 | 17.2 | NA | NA |
| Tumour location | ||||
| Stomach | 245 | 20.7 | 747 | 7.3 |
| Duodenum/small intestine | 85 | 7.2 | 3255 | 31.8 |
| Pancreas | 332 | 28.1 | 2928 | 28.6 |
| Colon | 39 | 3.3 | 1102 | 10.8 |
| Rectum | 442 | 37.4 | 1551 | 15.2 |
| Appendix | 40 | 3.4 | 653 | 6.4 |
| Tumour size (cm) (median) | 2.0±2.7 | 2.0± 2.8 | ||
| Differentiation | ||||
| Well/moderate | 882 | 74.6 | 7459 | 72.8 |
| Poor | 301 | 25.4 | 2777 | 27.1 |
| T staging | ||||
| T1 | 523 | 44.2 | 3312 | 32.4 |
| T2 | 243 | 20.5 | 2291 | 22.4 |
| T3 | 308 | 26.0 | 3181 | 31.1 |
| T4 | 109 | 9.2 | 1452 | 14.2 |
| N staging | ||||
| No | 846 | 71.5 | 5901 | 57.6 |
| Yes | 337 | 28.5 | 4335 | 42.4 |
| M staging | ||||
| No | 925 | 78.2 | 7751 | 75.7 |
| Yes | 258 | 21.8 | 2485 | 24.3 |
Abbreviations: NA=not applicable; SEER=Surveillance, Epidemiology, and End Results.