This variable indicates the U.S. Census region in which the patient lived at the time of diagnosis. The NAACCR data item Address at Diagnosis-State is recoded into one of the four U.S. Census regions: Northeast, Midwest, South, and West.
Considerations for Use
- There is a potential for bias in the incidence rates for Census regions, as only data from registries that met U.S. Cancer Statistics publication criteria are included in the database. It is recommended that age-adjusted incidence rates for U.S. Census regions be presented only if–
- At least 80% of the population for the Census region was covered by cancer registries that met U.S. Cancer Statistics publication criteria.
- The 95% confidence intervals around the observed age-adjusted regional incidence rates based on data from eligible registries for each of six major cancer sites (prostate, female breast, male colorectal, female colorectal, male lung and bronchus, and female lung and bronchus) included the estimate of the regional rate calculated.
- If any state in a region has a case count of fewer than 16, then the case counts for U.S. Census regions cannot be presented. See the Census Geographic Areas Reference Manual,external icon Chapter 6: Statistical Groupings of States and Counties pdf icon[PDF-2MB]external icon for a list of states in each region.