Childhood diabetes in England and Wales is up 40% in four years.
This is in the right ball park. Data from both the NHS and the Royal College of Paediatrics and Child Health show this scale of increase across similar time periods.
“Childhood diabetes is up 40% in four years,”
The Times, 18 August 2018.
The number of children and teenagers with a type 2 diabetes diagnosis in England and Wales treated in paediatric units increased by 40% between 2013/14 and 2016/17.
While this data doesn’t cover children treated outside of paediatric units, NHS data shows a similar level of increase across a similar time period.
NHS Digital data for England and Wales shows that in 2011/12 there were 1,320 under 20s with diagnosed type 2 diabetes, based on an audit of GPs. By 2016/17 that had risen to 1,985 – a 50% increase.
More GPs submitted data in 2016/17 than in 2011/12, which may account for some of the increase. But because not all GPs submitted data, the real number of children with type 2 diabetes is likely to be slightly higher in each year.
What does RCPCH data tell us?
That data came from an audit of paediatric diabetes units (PDUs) in England and Wales by the Royal College of Paediatrics and Child Health (RCPCH). It showed that in 2013/14 around 500 under-20 year olds were treated for type 2 diabetes.
In 2016/17, around 700 under-21 year olds were being treated for type 2 diabetes by paediatric units—an increase of 40%. (The inclusion of 20 year olds in the 2016/17 figures would have made a very small difference to the figures, as very few 20 year olds continue to be treated in paediatric units.) The majority of young people treated in PDUs in 2016/17 were in the age-range 13-17, and roughly two thirds were girls.
Type 2 diabetes is linked to being overweight or inactive, or having a family history of type 2 diabetes. Among children it’s far less prevalent than type 1 diabetes (not associated with being overweight), but there is a concern that childhood obesity is leading to increased prevalence of childhood type 2 diabetes (although in fact childhood obesity has remained stable in recent years).
The RCPCH data also showed that the increase was not observed for type 1 diabetes. The prevalence of type 1 diabetes among under-16 year olds was fairly stable over the same period—from 188 cases per 100,000 children to 194 cases per 100,000 in England and Wales (a 3% increase).
Why this data doesn’t tell us the whole story
The RCPCH themselves in the report said: “Prevalence and/or incidence rates of Type 2 diabetes cannot be accurately calculated from NPDA data as an unknown number of children and young people are treated for Type 2 diabetes in primary care and will therefore not be included in the audit.”
Simply put, the audit only looks at those children with diabetes being treated in paediatric units. Not all children with diabetes are treated in such units.
Caroline Fall, Professor of Paediatric Epidemiology at the University of Southampton told us that while “virtually all children aged 16 and under will be seen in a paediatric specialist hospital-based service… older teenagers are a grey area” because some get referred to the adult services.
Separate to the paediatric unit audit, the NHS do an audit of most GPs in England and Wales.
Ideally we’d compare the NHS’s 2013/14 numbers to their 2016/17 numbers to get a direct comparison to the RCPCH data. Unfortunately during 2013/14 the NHS only got 57% of GPs to submit data, and haven’t published the number of under 20s with type 2 diabetes. Therefore we’ve used the NHS’s figures for 2011/12 to look at the change.
The NHS told us that in 2011/12 GPs reported 1,320 patients under the age of 20 with type 2 diabetes. By 2016/17 this had increased to 1,985 – a 50% increase.
The proportion of GPs reporting in 2011/12 was slightly lower (88%) than in 2016/17 (95%), so some of that increase may be down to higher reporting last year.
NHS Digital recommended that we shouldn’t extrapolate the figures to look at what the theoretical change might have been if all GPs had reported.
The proportion of under 20s with type 2 diabetes remains a very small fraction of the total number of people in England and Wales under 20 – around 0.03% in 2016/17.
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