Table 1.
Characteristics of patients from SEER database by age
| 15-30 | 31-40 | 41-50 | 51-60 | 61-70 | 71-80 | >80 | P value | |
|---|---|---|---|---|---|---|---|---|
| Characteristic | (n = 1181) | (n = 5333) | (n = 18727) | (n = 39125) | (n = 53540) | (n = 64642) | (n = 43882) | |
| Site | <0.001 | |||||||
| Colon | 878 | 3854 | 13619 | 29335 | 42067 | 52767 | 36839 | |
| % | 76.1% | 73.6% | 73.8% | 76.1% | 79.8% | 83.0% | 85.6% | |
| Rectum | 276 | 1382 | 4823 | 9194 | 10625 | 10772 | 6205 | |
| % | 23.9% | 26.4% | 26.2% | 23.9% | 20.2% | 17.0% | 14.4% | |
| Sex | ||||||||
| Male | 622 | 2881 | 10188 | 22876 | 30443 | 32157 | 16326 | <0.001 |
| % | 52.7% | 54.0% | 54.4% | 58.5% | 56.9% | 49.7% | 37.2% | |
| Female | 559 | 2452 | 8539 | 16249 | 23097 | 32485 | 27556 | |
| % | 47.3% | 46.0% | 45.6% | 41.5% | 43.1% | 50.3% | 62.8% | |
| Surgery Resection | <0.001 | |||||||
| Yes | 1073 | 4874 | 17025 | 35729 | 48909 | 58248 | 36890 | |
| % | 90.9% | 91.4% | 90.9% | 91.3% | 91.4% | 90.2% | 84.1% | |
| No | 98 | 416 | 1594 | 3150 | 4318 | 6017 | 6647 | |
| % | 8.3% | 7.8% | 8.5% | 8.1% | 8.1% | 9.3% | 15.2% | |
| Unknown | 10 | 43 | 105 | 243 | 292 | 347 | 316 | |
| % | 0.8% | 0.8% | 0.6% | 0.6% | 0.5% | 0.5% | 0.7% | |
| Grade | <0.001 | |||||||
| I/II | 687 | 3555 | 13196 | 28331 | 39003 | 46869 | 30960 | |
| % | 58.2% | 66.7% | 70.5% | 72.4% | 72.8% | 72.5% | 70.6% | |
| III/IV | 358 | 1232 | 3589 | 6649 | 9212 | 11727 | 8526 | |
| % | 30.3% | 23.1% | 19.2% | 17.0% | 17.2% | 18.1% | 19.4% | |
| Unknown | 136 | 546 | 1942 | 4145 | 5325 | 6046 | 4396 | |
| % | 11.5% | 10.2% | 10.4% | 10.6% | 9.9% | 9.4% | 10.0% | |
| Race | <0.001 | |||||||
| Caucasian | 865 | 3943 | 14062 | 30358 | 42785 | 54227 | 38195 | |
| % | 73.2% | 73.9% | 75.1% | 77.6% | 79.9% | 83.9% | 87.0% | |
| African American | 158 | 726 | 2689 | 5190 | 6144 | 5550 | 3101 | |
| % | 13.4% | 13.6% | 14.4% | 13.3% | 11.5% | 8.6% | 7.1% | |
| Others* | 153 | 637 | 1864 | 3361 | 4358 | 4604 | 2458 | |
| % | 13.0% | 11.9% | 10.0% | 8.6% | 8.1% | 7.1% | 5.6% | |
| Unknown | 5 | 27 | 112 | 216 | 253 | 261 | 128 | |
| % | 0.4% | 0.5% | 0.6% | 0.6% | 0.5% | 0.4% | 0.3% | |
| Histological Type | <0.001 | |||||||
| Adenocarcinoma | 833 | 4363 | 16225 | 34740 | 47536 | 56905 | 38431 | |
| % | 72.2% | 82.5% | 86.9% | 89.0% | 88.9% | 88.1% | 87.7% | |
| Mucinous/Signet-ring cancer | 320 | 927 | 2440 | 4308 | 5927 | 7655 | 5384 | |
| % | 27.8% | 17.5% | 13.1% | 11.0% | 11.1% | 11.9% | 12.3% | |
| AJCC stage | <0.001 | |||||||
| I- II | 326 | 1857 | 6736 | 15467 | 23031 | 29743 | 19712 | |
| % | 27.6% | 34.8% | 36.0% | 39.5% | 43.0% | 46.0% | 44.9% | |
| III -IV | 705 | 2828 | 9432 | 17834 | 22753 | 25328 | 15786 | |
| % | 59.7% | 53.0% | 50.4% | 45.6% | 42.5% | 39.2% | 36.0% | |
| Unknown | 150 | 648 | 2559 | 5824 | 7756 | 9571 | 8384 | |
| % | 12.7% | 12.2% | 13.7% | 14.9% | 14.5% | 14.8% | 19.1% |
*Including American Indian/AK Native, Asian/Pacific Islander.