Economic costings for diabetes can include 'health expenditure' which the World Health Organisation defines as including both healthcare costs and medical research spend, or it can be much more fine-grained and include costings only for research spend that's directly relevant to Type 1 diabetes, or to diabetes complications. There are also prescription costs (costs of paying for people to have their medicines, usually includes things like test strips), hospital care costs and payments made to GPs for running a service (that also gives a useful figure for numbers of people with diabetes, thanks to the QOF figures).
Estimating the current and future costs of Type 1 and Type 2 diabetes in the UK, including direct health costs and indirect societal and productivity costs (2012) Diabetic Medicine. Hex, Bartlett et al
Diabetes Atlas: Global healthcare expenditure on diabetes for 2010 and 2030 (2010) Diabetes Research and Clinical Practice 87 (2010) 293–301. Zhang et al (note, despite name this is published in a journal and isn't the Diabetes Atlas itself, which lives here http://www.idf.org/diabetesatlas, 6th edition published 14 November 2013)
Page updated 4 February 2014