Diabetes Care, Vol 9, Issue 4 343-350, Copyright © 1986 by American Diabetes Association
Incidence, prevalence, and mortality of diabetes mellitus in Wadena, Marshall, and Grand Rapids, Minnesota: the Three-City Study
AP Bender, JM Sprafka, HG Jagger, KH Muckala, CP Martin and TR Edwards
The Minnesota Department of Health (MDH) in concert with the Centers for
Disease Control (CDC) conducted population-based studies of diabetes
mellitus in three Minnesota communities. The use of hospital and clinic
records alone for case ascertainment purposes would have missed 16% of
study-eligible diabetic individuals. Thus, studies that use only hospital
or clinic records may present a biased view of the natural history of
diabetes. Physician-defined diabetes without additional diagnostic review
yielded a prevalence of 1.6% (age standardized to the 1970 US Caucasian
population). Diabetes incidence was 117 per 100,000 (age standardized to
the same population). These results compare well with those of a Mayo
Clinic population-based study in Rochester, Minnesota, and indicate the
utility of physician-defined diabetes as an epidemiologic case definition.
Despite differences in population size and structure as well as different
medical care systems, diabetes incidence, prevalence, and mortality in
these communities was remarkably similar.