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Hindawi, Journal of Diabetes Research, (2015), p. 1-8, 2015

DOI: 10.1155/2015/587673



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Diabetes Complications at Presentation and One Year by Glycated Haemoglobin at Diagnosis in a Multiethnic and Diverse Socioeconomic Population: Results from the South London Diabetes Study

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Background. WHO’s recommendation ofHbA1c≥48 mmol/mol (6.5%) as diagnostic for type 2 diabetes mellitus (T2DM) was adopted by three UK London boroughs in May 2012. The South London Diabetes (SOUL-D) study has recruited people with newly diagnosed T2DM since 2008. We compared participants diagnosed before May 2012 withHbA1c<48 mmol/mol to those with diagnosticHbA1c≥48 mmol/mol.Methods. A prospective cohort study of newly diagnosed T2DM participants from 96 primary care practices, comparing demographic and biomedical variables between those with diagnosticHbA1c<48 mmol/mol orHbA1c≥48 mmol/mol at recruitment and after one year.Results. Of 1488 participants, 22.8% had diagnosticHbA1c<48 mmol/mol. They were older and more likely to be white (p<0.05). At recruitment and one year, there were no between-group differences in the prevalence of diabetic complications, except that those diagnosed withHbA1c<48 mmol/mol had more sensory neuropathy at recruitment (p=0.039) and, at one year, had new myocardial infarction (p=0.012) but less microalbuminuria (p=0.012).Conclusions. Use ofHbA1c≥48 mmol/mol as the sole T2DM diagnostic criterion may miss almost a quarter of those previously diagnosed in South London yetHbA1c<48 mmol/mol may not exclude clinically important diabetes.