Table 2.
Descriptive statistics for colorectal cancers among Alaska Native people (n = 1,223), comparing 2000-2008 to 2009-2017.
| 2000-2008 | 2009-2017 | P | |
|---|---|---|---|
| Total, n (%) | 534 | 689 | |
| Male | 247 (46) | 337 (49) | 0.36 |
| Female | 287 (54) | 352 (51) | |
| Age at diagnosis, mean (SD) | 63.9 (12.9) | 62.7 (13.2) | 0.11 |
| 0-39 | 18 (3) | 30 (4) | 0.80 |
| 40-49 | 61 (11) | 81 (12) | |
| 50-75 | 342 (64) | 447 (65) | |
| 75+ | 113 (21) | 131 (19) | |
|
| |||
| Tumor Sizea | |||
|
| |||
| Central tendency, mm, mean (SD) | 44 (24) | 42 (26) | 0.28 |
| Size distribution, mm, n (%) | |||
| <10 | 6 (2) | 40 (6) | 0.11 |
| 10-20 | 20 (7) | 41 (6) | |
| 20-40 | 69 (22) | 144 (21) | |
| >40 | 142 (46) | 305 (45) | |
| Unknown | 72 (23) | 154 (23) | |
|
| |||
| Location, n (%) | |||
|
| |||
| Colon | |||
| Proximal | 216 (41) | 268 (39) | 0.47 |
| Distal | 157 (29) | 185 (27) | |
| Not otherwise specified | 8 (2) | 14 (2) | |
| Rectum | 153 (29) | 221 (32) | |
|
| |||
| Stage distributiona, n (%) | |||
|
| |||
| Localized | 119 (38) | 223 (37) | 0.44 |
| Regional | 121 (39) | 212 (36) | |
| Distant | 62 (20) | 147 (21) | |
| Unknown | 8 (3) | 14 (2) | |
a
Tumor size and stage data only available for diagnosis years 2004 onwards.