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Digestive Diseases and Sciences
Published in: Digestive Diseases and Sciences 7/2011

Open Access 01-07-2011 | Original Article

Screening Prevalence and Incidence of Colorectal Cancer Among American Indian/Alaskan Natives in the Indian Health Service

Authors: Lukejohn W. Day, David K. Espey, Erin Madden, Mark Segal, Jonathan P. Terdiman

Published in: Digestive Diseases and Sciences | Issue 7/2011

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Abstract

Background

Studies on colorectal cancer (CRC) screening and incidence among American Indian/Alaska Natives (AI/AN) are few.

Aims

Our aim was to determine CRC screening prevalence and to calculate CRC incidence among AI/AN receiving care within the Indian Health Service (IHS).

Methods

A retrospective cohort study of AI/AN who utilized IHS from 1996 to 2004. AI/AN who were average-risk for CRC and received primary care within IHS were identified by searching the IHS Resource Patient Management System for selected ICD-9/CPT codes (n = 142,051). CRC screening prevalence was calculated and predictors of screening were determined for this group. CRC incidence rates were ascertained for the entire AI/AN population ages 50–80 who received IHS medical care between 1996 and 2004 (n = 283,717).

Results

CRC screening was performed in 4.0% of average-risk AI/AN. CRC screening was more common among women than men (RR = 1.6, 95% CI 1.4–1.7) and among AI/AN living in the Alaska region compared to the Pacific Coast region (RR = 2.5, 95% CI 2.2–2.8) while patients living in the Northern Plains (RR = 0.4, 95% CI 0.3–0.4) were less likely to have been screened. CRC screening was less common among patients with a greater number of primary care visits. The age-adjusted CRC incidence among AI/AN ages 50–80 was 227 cancers per 100,000 person-years.

Conclusions

CRC was common among AI/AN receiving medical care within IHS. However, CRC screening prevalence was far lower than has been reported for the U.S. population.
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Metadata
Title
Screening Prevalence and Incidence of Colorectal Cancer Among American Indian/Alaskan Natives in the Indian Health Service
Authors
Lukejohn W. Day
David K. Espey
Erin Madden
Mark Segal
Jonathan P. Terdiman
Publication date
01-07-2011
Publisher
Springer US
Published in
Digestive Diseases and Sciences / Issue 7/2011
Print ISSN: 0163-2116
Electronic ISSN: 1573-2568
DOI
https://doi.org/10.1007/s10620-010-1528-3

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