Table 1. Characteristic of patients from SEER database.
| Characteristic | Patients(n= 1,429) | |
|---|---|---|
| NO. | % | |
| Age (years) | ||
| Median | 60.8±10.4 | |
| Range | 14 to 88 | |
| Gender | ||
| Male | 1206 | 84.4 |
| Female | 223 | 15.6 |
| Race | ||
| White | 1278 | 89.4 |
| Black | 61 | 4.3 |
| AI | 18 | 1.3 |
| API | 70 | 4.9 |
| Unknown | 2 | 0.1 |
| Tumor size (cm) | ||
| Median(n = 1027) | 4.6±3.4 | |
| Range | 0.1 to 50 | |
| Tumor location | ||
| Cardia | 1299 | 90.9 |
| Fundus | 9 | 0.6 |
| Body | 17 | 1.2 |
| Antrum | 32 | 2.2 |
| Pylorus | 4 | 0.3 |
| Lesser curvature | 29 | 2.0 |
| Greater curvature | 9 | 0.6 |
| Overlapping | 18 | 1.3 |
| Unknown | 12 | 0.8 |
| Grade | ||
| Well differentiated | 62 | 4.3 |
| Moderately differentiated | 510 | 35.7 |
| Poorly differentiated | 827 | 57.9 |
| Undifferentiated | 30 | 2.1 |
| Depth of invasion | ||
| Mucosa or submucosa | 134 | 9.4 |
| Proper muscle | 215 | 15.0 |
| Subserosa | 667 | 46.7 |
| Serosa | 260 | 18.2 |
| Adjacent invasion | 125 | 8.7 |
| Unknown | 28 | 2.0 |
| Number of positive LN. | ||
| 0 | 757 | 53.0 |
| 1 to 2 | 342 | 23.9 |
| 3 to 6 | 231 | 16.2 |
| 7 to 15 | 81 | 5.7 |
| 16 or more | 18 | 1.3 |
| Positive LN (Mean±SD) | 1.8±3.3 | |
| Total LN (Mean±SD)(n=1411) | 14.3±9.9 | |
| AJCC Stage | ||
| IA | 100 | 7.0 |
| IB | 146 | 10.2 |
| IIA | 410 | 28.7 |
| IIB | 307 | 21.5 |
| IIIA | 196 | 13.7 |
| IIIB | 173 | 12.1 |
| IIIC | 69 | 4.8 |
| Unknown | 28 | 2.0 |
| Adjuvant radiotherapy | ||
| Yes | 60 | 4.2 |
| No | 1369 | 95.8 |
Abbreviations: AI, American Indian or Alaska Native; API, Asian or Pacific Islander; LN, lymph node; AJCC, American Joint Committee on Cancer.