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Diabetes Care, Vol 21, Issue 4 563-569, Copyright © 1998 by American Diabetes Association
Diabetes and impaired glucose tolerance in three Alaskan Eskimo populations. The Alaska-Siberia Project
SO Ebbesson, CD Schraer, PM Risica, AI Adler, L Ebbesson, AM Mayer, EV Shubnikof, J Yeh, OT Go and DC Robbins
Alaska Siberia Medical Research Program, University of Alaska, Seward, USA. ffsoe@aurora.alaska.edu
OBJECTIVE: The objectives of this study were to determine the prevalence of
diabetes and impaired glucose tolerance (IGT) in three Alaskan Eskimo
populations, using standardized diagnostic criteria, and to evaluate family
history and obesity as risk factors. RESEARCH DESIGN AND METHODS: This
cross-sectional study involved men and women > or = 25 years of age from
three Eskimo ethnic groups (Siberian Yupik, Central Yupik, and Inupiat)
residing in northwestern Alaska. Glucose tolerance status was defined by
World Health Organization criteria and was based on a 75-g oral glucose
tolerance test. Data on age, family history of diabetes, and degree of
Eskimo ancestry were obtained from a personal interview. Obesity was
assessed using BMI. RESULTS: A total of 454 of 899 (50.5%) eligible
participants were examined for diabetic status (239 Siberian Yupik, 106
Central Yupik, and 109 Inupiat participants). The prevalence of diabetes
was more than twice as high among the Siberian Yupik (9.6%) as among the
Central Yupik (2.8%) and Inupiat participants (3.7%). Diabetes was more
prevalent in women than men (8.8 vs. 4.2%). IGT was found in an additional
11.7% of the women and 4.7% of the men. The combined prevalence of diabetes
and IGT in the population > or = 55 years of age was 30.4% (diabetes
12.0%, IGT 18.4%). Of the people identified with diabetes, 47% had not been
previously diagnosed. Age-specific prevalences were similar to those found
in U.S. whites in the National Health and Nutrition Examination Survey II.
After adjustment for age, family history of diabetes was associated with
diabetes in study participants with an odds ratio of 4.4, while obesity was
associated with diabetes with an odds ratio of 2.6. CONCLUSIONS: These
prevalences of diabetes are the highest yet reported among Eskimo
populations. Obesity and family history of diabetes are associated with
increased odds of developing diabetes. These data underscore the need to
further examine risk factors and to design effective interventions.

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Copyright © 1998 by the American Diabetes Association.
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