TABLE 1.
Exclusion Criteria | Stage Trends | AJCC 6th & 7th Comparison | Site-Specific Factors (SSFs) |
---|---|---|---|
Objective 1 | Objective 2 | Objective 3 | |
In situ cases | no | no | yes |
Autopsy or death certificate cases | yes | yes | yes |
Histologies for which AJCC 6th or 7th stage is not defined* | yes | yes | yes |
Code 988 (not applicable), blank for each SSF | no | no | yes |
Year of diagnosis | 2004-2010 | 2010 | 2010 |
Final sample size: Colon | 191 361 | 25 577 | 24 437 |
Final sample size: Rectum | 73 341 | 10 150 | 9678 |
American Joint Committee on Cancer (AJCC) 6th or 7th editions derived stage = NA identifies histologies for which stage is undefined for both colon and rectum.
Source: National Cancer Institute's Surveillance, Epidemiology, and End Results (SEER) Program: SEER 18 geographic areas: States of Connecticut, New Mexico, Utah, California (4 areas: San-Francisco, San Jose-Monterey, Los Angeles, Greater California), Hawaii, Iowa, New Jersey, Louisiana, Kentucky, Georgia (3 areas: Atlanta, Rural Georgia, and remainder of the state), Alaska Native Registry, and metropolitan areas of Detroit, Michigan and Seattle (Western Washington), Washington.