Diabetes Care, Vol 16, Issue 4 570-574, Copyright © 1993 by American Diabetes Association
Prevalence of diabetes and impaired glucose tolerance in Funagata area, Japan
A Sekikawa, M Tominaga, K Takahashi, H Eguchi, M Igarashi, H Ohnuma, K Sugiyama, H Manaka, H Sasaki, H Fukuyama and al. et
Third Department of Internal Medicine, Yamagata University, School of Medicine, Japan.
OBJECTIVE--To determine the prevalence of diabetes mellitus and IGT in the
Funagata area of Japan. RESEARCH DESIGN AND METHODS--The total eligible
subjects was 1163, all were > or = 45 yr of age, and 52 were known
diabetic patients. Data collected included body height, weight, and answers
to medical questionnaires. A 75-g OGTT was done in the morning. WHO
criteria were used to classify the current diabetes status of study
participants. RESULTS--Of the 1111 scheduled for the OGTT, 868 took the
test; the participation rate was 77.8%. The prevalence of diabetes was 10.5
and 12.9%, and the prevalence of IGT was 14.7 and 18.0% for men and women,
respectively. The prevalence of undiagnosed diabetes (4.9%) was almost
equal to that of previously diagnosed diabetes (4.5%). CONCLUSIONS--The
prevalence of diabetes in the Funagata area was two to four times higher
than that of previous reports in Japan, in which many investigators used a
urinary glucose test as a preliminary test. This difference is attributed
to the method of determining the prevalence of diabetes.