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Access to Healthy Assets & Hazards (AHAH)

AHAH (the index of ‘Access to Healthy Assets and Hazards’) is a multi-dimensional index developed by the CDRC for Great Britain measuring how ‘healthy’ neighbourhoods are. The AHAH index combines indicators under four different domains of accessibility:

  • Retail environment (access to fast food outlets, pubs, tobacconists, gambling outlets),
  • Health services (access to GPs, hospitals, pharmacies, dentists, leisure services),
  • Physical environment (Blue Space, Green Space - Passive), and
  • Air quality (NO₂, PM10, SO₂).

Measurement data and deciles for the overall index, 4 domains and 14 inputs are produced for Lower Level Super Output Areas (LSOAs) for England and Wales, and Data Zones (DZ) for Scotland. Distances shown for some of the measurement data are means of the time (in minutes) for driving by car along the established road network, between the population weighted centroid of each postcode contained within each statistical geographical unit, and the actual location of the outlet/service. Please see the Sci Data paper (see Related Content below) for more information - note this paper is about Version 1 of the data.

Version 4 is updated including the most up-to-date data for 2024. AHAH Version 3 (released 2022), Version 2 (released 2017) and Version 1 (released 2016), these can be found on the previous versions page (see links below).

For detailed description of the columns contained within the data, see the Variable Dictionary; and for an overview of the characteristics of the data, see the Data Summary. These files can be downloaded from the bottom of this page.

Quality, Representation and Bias

The data are from multiple data sources. Each were selected following review since they presented the best quality or lowest bias data sources. We checked individual data sources for bias using local checks, however we did not find any issues. All external datasets are validated by their data producer as well.

Controller: 
University of Liverpool
Additional Info: 
FieldValue

Source

Office of National Statistics (ONS), NHS England, NHS Scotland, NHS Wales, OpenStreetMap, Sentinel Satellite, Scottish Government, Local Data Company (LDC), Department of Environment, Food and Rural Affairs (DEFRA)

Attribution

Data provided by the Consumer Data Research Centre, an ESRC Data Investment: ES/L011840/1, ES/L011891/1

Rows

42648

Columns

58

FieldValue
Modified
2024-11-12
Release Date
2022-09-07
Spatial / Geographical Coverage Location
Great Britain
Temporal Coverage
January 2019 to July 2024
Granularity
LSOA21CD, DZ11CD
Author
Green, Mark; Berragan, Cillian
Contact Name
Dr Cillian Berragan
Contact Email
Public Access Level
Public
POLYGON ((-7.5526177883148 49.020112484163, 1.1462956666946 50.701102438137, 2.7354294061661 53.024044550777, -0.4522579908371 61.340312037038, -9.9378848075867 58.370079435927, -4.7224420309067 54.561434636926, -3.4474325180054 53.947293887652, -5.0380843877792 53.524001619843))
UK Open Government Licence (OGL)

Data Extent

License

UK Open Government Licence (OGL)