Table 1.
Patient and tumor characteristics by age at diagnosis*
| Characteristic | Age at diagnosis, y | ||||||
|---|---|---|---|---|---|---|---|
| 20–39 | 40–49 | 50–59 | 60–69 | 70–79 | 80+ | ||
| No. (%) | Percent (within age group) | ||||||
| Age at diagnosis, y | |||||||
| 20–39 | 1194 (2.1) | ||||||
| 40–49 | 4199 (7.5) | ||||||
| 50–59 | 9964 (17.8) | ||||||
| 60–69 | 14 480 (25.8) | ||||||
| 70–79 | 16 496 (29.4) | ||||||
| 80+ | 9743 (17.4) | ||||||
| Race | |||||||
| White | 47 270 (84.3) | 77.3 | 78.9 | 81.3 | 83.4 | 86.0 | 89.1 |
| Black | 3609 (6.4) | 8.9 | 8.8 | 8.1 | 6.8 | 5.7 | 4.2 |
| Other | 5197 (9.3) | 13.8 | 12.3 | 10.6 | 9.9 | 8.4 | 6.7 |
| Sex | |||||||
| Male | 31 397 (56.0) | 49.8 | 52.9 | 58.6 | 61.6 | 56.6 | 46.0 |
| Female | 24 679 (44.0) | 50.3 | 47.1 | 41.4 | 38.4 | 43.4 | 54.0 |
| T stage | |||||||
| T1 | 8694 (15.5) | 16.5 | 16.1 | 18.1 | 17.2 | 15.1 | 10.7 |
| T2 | 13 557 (24.2) | 21.1 | 22.5 | 23.7 | 24.6 | 25.0 | 23.7 |
| T3 | 31 615 (56.4) | 57.1 | 56.8 | 54.5 | 54.6 | 56.4 | 60.7 |
| T4 | 2210 (3.9) | 5.3 | 4.6 | 3.7 | 3.6 | 3.6 | 4.9 |
| Grade | |||||||
| I | 4581 (8.2) | 7.7 | 7.6 | 8.2 | 8.6 | 7.9 | 8.2 |
| II | 40 994 (73.1) | 68.7 | 72.1 | 73.1 | 72.8 | 73.2 | 74.3 |
| III | 7881 (14.1) | 17.8 | 15.9 | 14.1 | 13.5 | 13.9 | 13.9 |
| IV | 250 (0.4) | 0.8 | 0.6 | 0.4 | 0.4 | 0.5 | 0.4 |
| Unknown | 2370 (4.2) | 4.9 | 3.9 | 4.2 | 4.7 | 4.5 | 3.2 |
| Surgery type | |||||||
| APR | 10 221 (18.2) | 15.4 | 15.2 | 15.8 | 18.9 | 20.1 | 18.1 |
| EBR/exenter | 2468 (4.4) | 10.4 | 6.0 | 4.3 | 4.1 | 4.0 | 4.2 |
| Upper resection | 43 387 (77.4) | 74.2 | 78.8 | 79.9 | 77.0 | 75.9 | 77.7 |
* Characteristics differ by age group, Chi-square tests; all P < .0001. APR = abdominal perineal resection; EBR = en bloc resection.