Table 1. Characteristics of CC patients in the SEER database: 2004–2012.
| Characteristics | 20–39 years N = 1271 (%) | 40–59 years N = 13743 (%) | 60–79 years N = 33647 (%) | ≥80 years N = 17058 (%) | Total N = 65719 (%) |
|---|---|---|---|---|---|
| Gender | |||||
| Male | 666 (52.4) | 7444 (54.2) | 16498 (49.0) | 6119 (35.9) | 30727 (46.8) |
| Female | 605 (47.6) | 6299 (45.8) | 17149 (51.0) | 10939 (64.1) | 34992 (53.2) |
| Race | |||||
| White | 922 (72.5) | 9907 (72.1) | 26996 (80.2) | 14987 (87.9) | 52812 (80.4) |
| Black | 193 (15.2) | 2652 (19.3) | 4198 (12.5) | 1111 (6.5) | 8154 (12.4) |
| Others | 142 (11.2) | 1100 (8.0) | 2341 (7.0) | 930 (5.4) | 4513 (6.9) |
| Unknown | 14 (1.1) | 84 (0.6) | 112 (0.3) | 30 (0.2) | 240 (0.3) |
| AJCC Stage | |||||
| Stage I | 148 (11.7) | 3153 (22.9) | 9038 (26.9) | 3961 (23.2) | 16300 (24.8) |
| Stage II | 473 (37.2) | 4879 (35.5) | 12971 (38.5) | 7535 (44.2) | 25858 (39.3) |
| Stage III | 650 (51.1) | 5711 (41.6) | 11638 (34.6) | 5562 (32.6) | 23561 (35.9) |
| Grade | |||||
| Grade I | 70 (5.5) | 1281 (9.3) | 3114 (9.3) | 1373 (8.0) | 5838 (8.9) |
| Grade II | 803 (63.2) | 9449 (68.8) | 22819 (67.8) | 10997 (64.5) | 44068 (67.0) |
| Grade III | 315 (24.8) | 2280 (16.6) | 5968 (17.7) | 3846 (22.6) | 12409 (18.9) |
| Grade IV | 45 (3.5) | 267 (1.9) | 697 (2.1) | 445 (2.6) | 1454 (2.2) |
| Unknown | 38 (3.0) | 466 (3.4) | 1049 (3.1) | 397 (2.3) | 1950 (3.0) |
| Histology type | |||||
| Adenocarcinoma | 1027 (80.8) | 12011 (87.4) | 29304 (87.1) | 14521 (85.1) | 56863 (86.5) |
| Mucous/signet-ring cell | 230 (18.1) | 1660 (12.1) | 4112 (12.2) | 2368 (13.9) | 8370 (12.8) |
| Other types | 14 (1.1) | 72 (0.5) | 231 (0.7) | 169 (1.0) | 486 (0.7) |
| Tumor location | |||||
| Left-sided colon | 404 (31.8) | 3597 (26.2) | 5848 (17.4) | 1973 (11.6) | 11822 (18.0) |
| Right-sided colon | 867 (68.2) | 10146 (73.8) | 27799 (82.6) | 15085 (88.4) | 53897 (82.0) |
| T stage | |||||
| T1/T2 | 199 (15.7) | 3813 (27.7) | 10459 (31.1) | 4484 (26.3) | 18955 (28.8) |
| T3/T4 | 1072 (84.3) | 9930 (72.3) | 23188 (68.9) | 12574 (73.7) | 46764 (71.2) |
| N stage | |||||
| N0 | 621 (48.9) | 8032 (58.4) | 22009 (65.4) | 11496 (67.4) | 42158 (64.1) |
| N1/N2 | 650 (51.1) | 5711 (41.6) | 11638 (34.6) | 5562 (32.6) | 23561 (35.9) |
Others: American Indian/AK Native, Asian/Pacific Islander.