Monday, 15 July 2019

How to use misleading statistics in a bid for government funding - the LGA and public health at their finest


Terrible:
Council chiefs have warned of a ‘childhood obesity crisis’ as new figures reveal that the number of young people being treated for Type 2 diabetes has increased by nearly 50% in five years.
Not the statistic but the spectacularly misleading way in which this scary paragraph is framed. It is, I'm afraid, an absolute classic of the public health scare story genre - guaranteed to get media coverage but utterly deceptive.

So let's look at the numbers:
Figures from the Royal College of Paediatrics and Child Health show that 745 children and young people under the age of 25 received care for Type 2 diabetes in Paediatric Diabetes Units in England and Wales in 2017/18.
The first point here is that we're not talking about children here - unless we've begun categorising those aged 18-25 as children? Of the cohort in question (under 25 years old), a third -32% to be more precise - are adults i.e. aged over 18. Some of them may be obese and may have Type-2 diabetes but using these figures to claim an increase in child diabetes is simply wrong.

And that cohort? There are 17.4 million of them meaning that the 745 who have 'received care' for Type-2 diabetes represent a massive 0.004% of the population. There may have been an increase since 2015 of 50% but this is still not in any respect a crisis (except perhaps for the individuals most of whom will be over 18). Even with the more inflated Diabetes Association estimate of 7,000 under 25s who have received support for 'diabetes-related' conditions, the problem still only affects 0.04% of the cohort.

There has been a trend in public health using secondary factors to substantiate proposals for either new regulations, new taxes or more local government funding. Mostly this is because there's not really any evidence that child obesity is rising:





That's from King's College - here's the latest from the NHS itself:



Again no indication that child obesity is rising (indeed it has fallen for children arriving in primary school). So public health look for other statistics to peddle their hysterical fussbucketry, most commonly statistics like these on Type-2 diabetes that, while interesting, suffer from a whole load of flaws (changes in referral practice, greater awareness of symptoms, new centres and facilities to support diabetes) that mean the increase could be entirely unrelated to changes in the number of obese children and relate more closely to better diagnosis and more provision in the NHS system - both good things but no justification for advertising bans or bunging millions for local councils to splurge on useless obesity programmes.

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