Journal
DIABETES CARE
Volume 37, Issue 1, Pages 149-157Publisher
AMER DIABETES ASSOC
DOI: 10.2337/dc13-1336
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Funding
- Liao Wun Yuk Diabetes Memorial Fund
- Hong Kong Foundation for Research and Development in Diabetes under The Chinese University of Hong Kong
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OBJECTIVEWe examined metabolic profiles and cardiovascular-renal outcomes in a prospective cohort of Chinese patients with young-onset diabetes defined by diagnosis age <40 years. Patients with type 1 diabetes and normal-weight (BMI <23 kg/m(2)) and overweight (BMI 23 kg/m(2)) patients with type 2 diabetes were compared.RESEARCH DESIGN AND METHODSBetween 1995 and 2004, 2,323 patients (type 1 diabetes, n = 209; normal-weight type 2 diabetes, n = 636; and overweight type 2 diabetes, n = 1,478) underwent detailed clinical assessment. Incident cardiovascular disease (CVD) including coronary heart disease, stroke, and peripheral vascular disease were identified using hospital discharge diagnoses. End-stage renal disease (ESRD) was defined by glomerular filtration rate <15 mL/min/1.73 m(2) or dialysis.RESULTSOverweight patients with type 2 diabetes had the worst metabolic profile and highest prevalence of microvascular complications. Over a median follow-up of 9.3 years, incidences of CVD were 0.6, 5.1, and 9.6 per 1,000 person-years in patients with type 1 diabetes, normal-weight patients with type 2 diabetes, and overweight patients with type 2 diabetes. The respective figures for ESRD were 2.2, 6.4, and 8.4 per 1,000 person-years. Compared with type 1 diabetes, the overweight type 2 diabetes group had a greater hazard of progression to CVD (hazard ratio [HR] 15.3 [95% CI 2.1-112.4]) and ESRD (HR 5.4 [95% CI 1.8-15.9]), adjusted for age, sex, and disease duration. The association became nonsignificant upon additional adjustment for BMI, blood pressure, and lipid.CONCLUSIONSYoung patients with type 2 diabetes had greater risks of developing cardiovascular-renal complications compared with patients with type 1 diabetes. The increased risk was driven primarily by accompanying metabolic risk factors.
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