Associations of Census-Tract Poverty with Subsite-Specific Colorectal Cancer Incidence Rates and Stage of Disease at Diagnosis in the United States
Figure 1
CRC subsite-specific incidence rate ratios and 95% CIs for late-to-early stage for selected areas in the United States (data are from selected population-based cancer registries that participate in the National Program of Cancer Registries (NPCR) and/or the Surveillance Epidemiology and End Results (SEER) Program: Arizona, Colorado, Connecticut, Florida, Georgia, Hawaii, Idaho, Iowa, Louisiana, Minnesota, New York, New Jersey, Texas, Utah, West Virginia, and Los Angeles). aProximal included ICD-O-3 codes C18.0, C18.2, C18.3, C18.4, and C18.5. bDistal included ICD-O-3 codes 18.6 and C18.7. cRectum included ICD-O-3 codes C19.9 and C20.9. dLate stage includes cases diagnosed at regional or distant stage; early stage includes cases diagnosed at in situ or localized stage. CT, census tract; IRR, incidence rate ratio; CI, confidence interval; , number of cases; rates are per 100,000 and age-adjusted to the 2000 US standard population. Statistically significant difference () in late-to-early stage IRR by poverty level based on -statistic. Difference is based on comparison of late-to-early stage IRRs for highest poverty categories with the lowest poverty category.
