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Ethnic differences in control of cardiovascular risk factors in patients with type 2 diabetes attending an Inner London diabetes clinic

Barts and the London NHS Trust, Department of Diabetes and Metabolic Medicine, The Royal London Hospital, London, UK

Correspondence to:
Correspondence to:
Dr T A Chowdhury
Barts and the London NHS Trust, Mile End Diabetes Centre, The Royal London Hospital (Mile End), Bancroft Road, London E1 4DG, UK; Tahseen.Chowdhury{at}bartsandthelondon.nhs.uk

Background: South Asians have higher risk of diabetic complications compared with white Europeans. The aim of this study was to compare management of cardiovascular risk factors between Bangladeshis and white Europeans.

Methods: A retrospective survey of all diabetic patients attending an Inner London hospital diabetic clinic over one year was undertaken. Data were obtained from the hospital diabetes database: presence of macrovascular (myocardial infarction, angina, stroke, transient ischaemic attack, cardiac intervention) and microvascular disease (neuropathy, retinopathy, and nephropathy), glycated haemoglobin, blood pressure, lipids, smoking, and body mass index (BMI) were all determined.

Results: A total of 1162 white European and 912 Bangladeshi patients with full data available were included in the analyses. The groups were equivalent in age, sex, duration of diabetes. Compared with white Europeans, Bangladeshis had more macrovascular disease (19.5% v 11.9% p<0.01), sight threatening retinopathy (7.2% v 3.8%, p<0.01), and nephropathy (15.3% v 9.1%, p<0.01). In addition, Bangladeshis had significantly more male smokers (28.1% v 22.1%, p<0.01), poorer glycaemic control (mean HbA1c 8.6% v 8.1%, p = 0.039), greater proportion with uncontrolled hypercholesterolaemia (total cholesterol >5.0 mmol/l, 31.6% v 26% p = 0.05), and poorer control of blood pressure (proportion with BP >140/80 mm Hg, 43.2% v 32.1%, p<0.01).

Conclusions: South Asians with type 2 diabetes have poorer glycaemic, blood pressure, and lipid control than white Europeans. The reasons for this are probably multifactorial.

Keywords: diabetes; Bangladeshis; cardiovascular risk

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