Author(s): Juutilainen A, Lehto S, Rnnemaa T, Pyrl K, Laakso M
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Abstract OBJECTIVE: To compare the risk of cardiovascular disease (CVD) death and the impact of hyperglycemia on the risk of CVD mortality associated with type 1 diabetes to that associated with type 2 diabetes. RESEARCH DESIGN AND METHODS: The study comprised 173 participants with type 1 diabetes, 834 participants with type 2 diabetes, and 1,294 nondiabetic participants, aged 45-64 years at baseline and free of CVD. The age of onset of diabetes was >30 years in both diabetic groups. RESULTS: During an 18-year follow-up, 86 participants with type 1 diabetes, 567 participants with type 2 diabetes, and 252 nondiabetic participants died. CVD mortality rates per 1,000 person-years were 23.1 (95\% CI 16.9-31.9) in type 1 diabetic, 35.3 (30.8-40.4) in type 2 diabetic, and 4.6 (3.8-5.7) in nondiabetic participants. Adjusted hazard ratios for CVD mortality in participants with type 1 diabetes versus no diabetes was 3.6 (95\% CI 2.2-5.7) in men and 13.3 (6.9-22.5) in women and in participants with type 2 diabetes versus no diabetes 3.3 (2.5-4.5) in men and 10.1 (6.7-17.4) in women. An increment of 1 unit (\%) of GHb increased CVD mortality by 52.5\% (95\% CI 28.4-81.3) in type 1 diabetic subjects and by 7.5\% (4.3-10.8) in type 2 diabetic participants. CONCLUSIONS: The impact of type 1 and type 2 diabetes on CVD mortality was similar. The effect of increasing hyperglycemia on the risk of CVD mortality was more profound in type 1 than in type 2 diabetic subjects.
This article was published in Diabetes Care
and referenced in Journal of Molecular and Genetic Medicine