Prevalence of diabetes and impaired glucose tolerance in 64-year-old Swedish women: experiences of using repeated oral glucose tolerance tests

Brohall, Gerhard,1952Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Wallenberg Laboratory,Institute of Medicine, Department of Molecular and Clinical Medicine (author)

OBJECTIVE: The purpose of this study was to describe the prevalence of diabetes and impaired glucose tolerance (IGT) in middle-aged women and to examine the variability and practical use of the oral glucose tolerance test (OGTT) in the screening for IGT and diabetes. RESEARCH DESIGN AND METHODS: All 64-year-old women living in Goteborg, Sweden, were invited to take part in a screening examination (n = 4,856). Of these, 82% (n = 3,998) responded and 53% (n = 2,595) participated and underwent anthropometric measurements and a 75-g standardized OGTT that was repeated within 2 weeks in those not showing normal glucose tolerance (NGT). RESULTS: The prevalences of known and new diabetes, IGT at both OGTTs, and impaired fasting glucose were 4.7, 4.8, 14.4, and 6.4%, respectively. Half of the women with diabetes were previously undiagnosed, and 37% of the diagnoses were based on OGTT and diabetes 2-h values at both or one of the two examinations. Women with IGT at both OGTTs, in comparison with those with one impaired and one normal OGTT, had higher BMI, waist girth, and blood pressure. More than 40% of the women showed impaired glucose metabolism. CONCLUSIONS: Among these women, the prevalence of undetected diabetes was high and repeated OGTTs were needed to identify and not misclassify a considerable proportion of patients. The degree of glucose tolerance impairment and the number of abnormal OGTTs were directly associated with occurrence of components of the metabolic syndrome.

Behre, Carl Johan,1968Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Wallenberg Laboratory,Institute of Medicine, Department of Molecular and Clinical Medicine(Swepub:gu)xbehca (author)
Hulthe, Johannes,1970Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Wallenberg Laboratory(Swepub:gu)xhultj (author)
Wikstrand, John,1938Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Wallenberg Laboratory(Swepub:gu)xwikjo (author)
Fagerberg, Björn,1943Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Institutionen för medicin, avdelningen för molekylär och klinisk medicin,Wallenberg Laboratory,Institute of Medicine, Department of Molecular and Clinical Medicine(Swepub:gu)xfagbj (author)
Göteborgs universitetWallenberglaboratoriet (creator_code:org_t)

By the author/editor: Brohall, Gerhard ...; Behre, Carl Joha ...; Hulthe, Johannes ...; Wikstrand, John, ...; Fagerberg, Björn ...

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