Introduction. We investigated incidence and staging patterns of prostate, female breast, lung, and colorectal cancer among American Indians/Alaska Natives (AI/ANs) and non-Hispanic Whites (NHWs) in the Northern Plains. Methods. Cancer registry data (2002–2009) from Nebraska, North Dakota, and South Dakota were analyzed. Incidence rates were calculated and multivariate logistic regression analyses identified factors associated with unstaged versus staged and late-stage cancer cases versus early. Results. The incidence rate was higher among AI/ANs than NHWs for lung cancer (92.2 vs. 60.6 per 100,000). Compared with NHWs, AI/ANs were 2.0 times more likely to receive an unstaged diagnosis and 1.2 times more likely to receive a late-stage diagnosis. AI/ANs were significantly more likely than NHWs to receive an unstaged diagnosis. Discussion. Increased efforts are needed to reduce unstaged and late-stage diagnoses among Northern Plains AIs. Efforts to promote early detection of cancer should target younger AI/ANs.


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pp. 1048-1066
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