The global inverse care law: a distorted map of blindness

“Eye care for all” is the motto of this year’s World Sight Day. But there are stark global inequalities in access to eye care. In 1971, Hart described the, ‘Inverse Care Law’ as the availability of good medical care varying inversely with the need for it in the population served. Hart was describing the situation in the National Health Service in Great Britain at the time in which he practiced as both a General Practitioner and an epidemiologist.
Two recently published articles demonstrate the ‘Inverse Care Law’ on a global level. The prevalence of blindness worldwide in 2010 was reported by the WHO and verified that low- and middle-income countries, as expected, have the highest prevalence of blindness and visual impairment. In stark contrast to this, a more recent report describes the,“Number of ophthalmologists in training and practice worldwide” providing global data for the number of ophthalmologists per county and demonstrates that despite a growing number in practice the gap between need and supply is widening.
The situation is also magnified within individual countries of high, middle and low-income. For example, in France, an inverse correlation was found between the number of ophthalmologists and the prevalence of low vision for subjects of similar age and socio-professional category and another example is in Kenya where of the 86 practicing ophthalmologists, 43 are based in Nairobi (personal correspondence). That equates to 50% of the countries ophthalmologists serving 8% of an already underserved population.
We have developed two cartograms to depict the data from these two papers using Gastner & Newman diffusion-based method. This allowed us to create density-equalised maps based on the absolute values provided in the papers. In the maps, each of the reference areas (WHO regions and countries) is resized according to these values. Larger areas represent higher numbers and smaller areas proportionally smaller data values:

Cartograms of Blindness and Opthmamologists
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Urbane Veränderungsprozesse in Stadtregionen Deutschlands

This is a German-language poster contribution looking at processes of change in the major urban agglomerations in Germany and novel ways of visualising these using cartogram visualisation techniques. Continue reading

In Focus: May 2015 – A Climate Change in UK Politics

Political InsightFollowing the full cartographic roundup of this year’s general election earlier this week, here comes a related piece of research. In an article for the “In Focus” section of Political Insight (September 2015, Volume 6, Issue 2) Danny Dorling and I plotted the geography of an unexpected Conservative General Election victory.
What happened of most importance in 2015 was the rapid acceleration of a trend that has been underway in UK voting since 1979 and can be seen as having its origins in the 1960s: the increasingly uneven spread of Tory voters. The graph shows the minimal proportion of Conservative voters who would have to move seat within Britain if the Conservatives were to have an even distribution of the vote in that part of the UK at each and every General Election held between 1915 and 2015. In 2015 that proportion peaked at 19.9 per cent. When the UK becomes more polarised social pressures rise, people begin to separate more and more in their views, incomes and locations.

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Electoral Doctrine: Thirty-nine maps of voting

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The 2015 UK general election is history and it seems as all stories have been told about the unexpected victory of the Conservative party. But the picture of the election is far more diverse than it seems and the political landscapes are more polarised than a conventional map of the first votes can show.
This poster, submitted as an entry to the joint BCS-SoC ‘Mapping Together’ Conference starting tomorrow in York, presents the electoral doctrine of the 2015 election. It is a cartographic roundup of the beliefs of the electorate in thirty-nine images that tell the full story of a shift in political paradigms that will shape the debates for the elections to come:

Poster: Electoral Doctrine - 39 Maps of Voting
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Asylum seekers in Europe

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2,500 people are believed to have died or gone missing on their way to Europe this year already, according to estimates by UNHCR. But it was the image of a young boy found dead on the shores of Turkey which changed the tone in the debate about the ongoing refugee crisis in Europe. While the response to the crisis varies strongly, Campaign groups are calling for a European-wide approach to the crisis. While Germany suspended the Dublin regulation to allow regugees into the country and claim asylum regardless of where they entered the European Union, the country also calls for a more equitable system of sharing refugees across the EU similar to Germany’s domestic approach of distributing refugees.
The following cartogram shows the current situation in Europe using Eurostat’s latest statistics about the number of asylum applicants in each country. The data covers the first half of 2015 (January to June) and adds up to 417,430 officially recorded claims in that period in the EU member states. The following map also includes those European countries which are not member of the European Union but part of the Schengen area and it shows each country resized according to the absolute number of asylum applications in that country from January to June 2015:

Asylum Applicants in Europe 2015
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Refugees in Germany

As stated in a report earlier this year, “wars, conflict and persecution have forced more people than at any other time since records began to flee their homes and seek refuge and safety elsewhere” (see more details and a global map series at http://www.viewsoftheworld.net/?p=4541). In Europe, this has lead to a human crisis with many refugees seeking to get to the continent via sea and land. Beyond the human tragedy, the political debate has become ever more heated over who is willing to host the migrants.
Unlike the debate in the UK, where the government is more concerned about closing the borders into Britain at the most vulnerable entry point in France, Germany’s government is looking into ways how an expected 800,000 migrants can be accommodated this year. Using data from the most recent official statistics the following cartogram shows where refugees and asylum seekers are allocated in Germany showing the states (or Laender) rezised according to the absolute number of asylum seekers and refugees living there (the colours merely distinguish the different Laender and do not represent any further data):

Refugees and Asylum Seekers in Germany 2014/2015
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