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- W4205169617 abstract "Abstract Lung cancer and colorectal cancer (CRC) are leading causes of cancer morbidity and mortality among US American Indian and Alaska Native (AI/AN) men and women. For most AI/AN communities, disparities in these cancers occur compared to their non-Hispanic White (NHW) counterparts. This presentation provides a brief overview of the epidemiology of lung and colorectal cancers among AI/AN, and serves as background for talks regarding the impact of revised eligibility criteria for implementing screening programs among AI/AN. In recent years, lung cancer incidence rates among AI/AN persons were 12% higher than rates among NHW in counties with relatively high proportions of AI/AN residents. By region, rates were 17% to 3 times higher in AI/AN than NHW in Pacific Coast, Alaska, and Northern and Southern Plains, in contrast to the Southwest and Eastern US where AI/AN rates were 35% lower. While lung cancer incidence is decreasing overall in both populations, the rate of decrease is slower for AI/AN. Generally, lung cancer occurs at younger ages and at more advanced stages for AI/AN compared with NHW, and AI/AN persons with lung cancer have worse survival. Little is known about the experience of lung cancer screening (LCS) in health care systems that serve AI/AN communities. LCS has not been a mandatory reporting measure for the Indian Health Service. Models of expanded eligibility for LCS suggest that AI/AN will have a higher relative increase in eligible persons compared with NHW, but information on implementation is scarce. Disparities in CRC are also notable among AI/AN. In recent years, incidence rates among AI/AN were 41% higher than among NHW in counties with relatively high proportions of AI/AN residents. CRC incidence rates also vary regionally, but AI/AN in general had higher CRC incidence rates than did NHW. CRC incidence rates have been decreasing overall among both AI/AN and NHW populations, but at a slower pace for AI/AN. Notably, CRC incidence increased among AI/AN in the Southwest. CRC incidence rates have also increased among persons younger than 50 years for both AI/AN and NHW, but more than 1 in 7 CRC cases among AI/AN were diagnosed at ages younger than 50 years, compared with less than 1 in 10 among NHW. AI/AN were more likely to have late-stage diagnoses than were NHW, and AI/AN men had the worst survival than men in other racial groups. Factors encountered in implementing programs to improve lung and CRC screening among AI/AN health care systems will be discussed follow this presentation. Citation Format: Dorothy A. Rhoades. A brief overview of lung and colorectal cancer disparities in American Indian and Alaska Native populations [abstract]. In: Proceedings of the AACR Virtual Conference: 14th AACR Conference on the Science of Cancer Health Disparities in Racial/Ethnic Minorities and the Medically Underserved; 2021 Oct 6-8. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2022;31(1 Suppl):Abstract nr IA-48." @default.
- W4205169617 created "2022-01-25" @default.
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- W4205169617 date "2022-01-01" @default.
- W4205169617 modified "2023-10-07" @default.
- W4205169617 title "Abstract IA-48: A brief overview of lung and colorectal cancer disparities in American Indian and Alaska Native populations" @default.
- W4205169617 doi "https://doi.org/10.1158/1538-7755.disp21-ia-48" @default.
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