I recently spent the most interesting 20 minutes of my week when I was asked to review OSR’s recently published article on health inequalities. The article itself is an excellent read, but it also led me to play around with the Fingertips tool, an online platform that allows users to easily access and analyse a range of public health data. While exploring this tool, I generated this chart:
The chart shows the prevalence of obesity in children entering reception year (those aged 4 or 5) in England since 2007/08, organised by the deciles of multiple deprivation. It tells a clear story: there is an obvious spike in obesity in 2020/21, and the spike is more significant for children living in the most-deprived areas. (The data come from the Office for Health Improvement and Disparities Health Inequalities dashboard. To recreate the chart, go to the child health domain; select Reception: Prevalence of obesity; and select Deprivation as the inequality indicator).
These data, and the story they tell, are valuable in and of themselves. But they also illustrate the richness and value of this public health data set. There is a wealth of data available on health inequalities in the UK – and that’s what I want to talk about.
There is perennial interest in health data among policymakers, the media and the public. The performance of the NHS, reflected in data, is a mainstay of political party manifesto commitments. Relevant figures are frequently quoted to illustrate the challenges and successes of the UK’s health systems.
For example, when the Department of Health and Social Care announced the abolition of NHS England, the Secretary of State for Health highlighted the delivery of 2 million extra appointments since the 2024 General Election and a reduction in waiting lists by 193,000.
Similarly, in Scotland, the Scottish Government has made new commitments to improve NHS performance. These commitments include ensuring that no one waits more than 12 months for a new outpatient appointment or inpatient case and the delivery of over 150,000 extra appointments and procedures in the coming year.
Metrics of health system performance also feature heavily in the UK Government’s missions. Its health mission is explicitly framed in terms of the performance of the NHS (in England), and its leading milestone focuses on reducing waiting times for elective treatment, with the aim that 92% of patients in England should wait no longer than 18 weeks for elective treatment.
Evidently, the focus on the metrics of NHS performance is widespread, and understandably so: these system metrics are important. Many people are concerned about their experience as a patient in health services, so it’s not surprising that so much public conversation focuses on their delivery.
Yet while these metrics say a lot about the NHS as a system of service delivery, they say less about the general health of the population – other than perhaps offering the sense that growing demands on the NHS’s services may reflect underlying health conditions in an ageing population.
But regarding demand on services as a proxy for underlying health is a poor measure at best. It doesn’t indicate whether the UK’s health is improving or worsening for different age groups, in different places, at different levels of income. (Indeed, one of the Labour Party’s 2024 manifesto aspirations was to halve the gap in life expectancy between the richest and the poorest in society, which focuses more on health outcomes as opposed to NHS performance.)
Moreover, demographic breakdowns can add significant value to statistics about the health system. In fact, these are something we often hear users request. But such breakdowns are missing from the standard metrics that summarise aggregate performance. These focus on the big national numbers – the total number of people waiting, or the total number of operations.
In short, focusing on the NHS’s effectiveness in delivering specific outputs doesn’t highlight health inequalities very well. And there is a risk that focusing on system metrics drives interventions that focus on improving these numbers, not underlying population health.
That brings me back to OSR’s review of health inequalities. This wider question of data on health inequalities is the focus of this recent review. Our article shows that there are many data sources available across the UK, as well as the Fingertips tool with which I generated the school age obesity chart. These include:
- the online profiles tool for Scotland, which provides access to a huge range of indicators of public health, including drugs, alcohol and tobacco use, mental health, and life expectancy, and in the future will include physical exercise
- the annual Well Being of Wales report, which places milestones like healthy life expectancy and health lifestyles alongside other indicators like income and education
- Northern Ireland’s health inequalities statistics, which provide an annual update on health inequalities in Northern Ireland
The variety of available data tools and sources indicates that, despite the demands to report on NHS performance, health bodies are able to carve out sufficient time and resource to provide clear analysis of how health differs across the population. However, for these public health data resources to meet their full potential, they need to do more than merely exist; it’s also important that they are used and referred to in debates about health. Government, citizens and the media certainly want to understand how the NHS is performing, and there are good data that can help us determine this across the UK. But to enhance the underlying health of the nation, we need broader data that focus on people and their health – not just systems.
So, at OSR we aim to continue to focus on the high-profile system metrics – but to balance this focus with a wider perspective on public health. In particular, we want to celebrate the value and power of the available tools to understand, analyse and address the health of the population.
Because, as my graph on obesity in reception-age children shows, you can discover the fundamentals of the population’s health without ever going near a hospital performance league table.