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- Title
The incidence of type 2 diabetes in the United Kingdom from 1991 to 2010.
- Authors
Holden, S. E.; Barnett, A. H.; Peters, J. R.; Jenkins‐Jones, S.; Poole, C. D.; Morgan, C. L.; Currie, C. J.
- Abstract
Aims To characterize the incidence of type 2 diabetes in the UK over the previous 20 years; and determine if there has been an increase in people aged 40 years or less at diagnosis. Methods For this retrospective cohort study, patients newly diagnosed with type 2 diabetes between 1991 and 2010 were identified from the UK Clinical Practice Research Datalink ( CPRD). Patient data were grouped into 5-year intervals by year of diagnosis and age at diagnosis. A standardized incidence ratio ( SIR) was determined (1991-1995 = 100). The percentage of newly diagnosed patients for each age group and aged ≤40 years was calculated for each 5-year calendar period. The incidence rate by age and 5-year calendar period was also determined. Results In 2010, the crude incidence rate of type 2 diabetes was 515 per 100,000 population. The overall SIR increased to 158 (95% CI 157-160, p < 0.001), 237 (235-238, p < 0.001) and 275 (273-276, p < 0.001) for 1996-2000, 2001-2005 and 2006-2010, respectively. For those ≤40, the respective values were 217 (209-226, p < 0.001), 327 (320-335, p < 0.001) and 598 (589-608, p < 0.001). An increase in incidence occurred with increasing 5-year calendar period. The incidence of type 2 diabetes was higher for males after the age of 40 and higher for females aged ≤40. The percentage of patients aged ≤40 years at diagnosis increased with each increasing 5-year calendar period (5.9, 8.4, 8.5 and 12.4%, respectively). Conclusions There was a significant increase in the incidence of diagnosed type 2 diabetes between 1991 and 2010 and the proportion of people diagnosed at a relatively early age has increased markedly.
- Subjects
TYPE 2 diabetes diagnosis; DISEASE incidence; CONFIDENCE intervals; RETROSPECTIVE studies; COHORT analysis
- Publication
Diabetes, Obesity & Metabolism, 2013, Vol 15, Issue 9, p844
- ISSN
1462-8902
- Publication type
Article
- DOI
10.1111/dom.12123