Documentation
Associated Media:
Description:
Modelled concentrations (µg/m3) of annual average nitrogen dioxide (NO2) and particulate matter with diameter <2.5µm (PM2.5) were linked to postcode centroids in Greater London. Air pollution exposure estimates (i.e. concentrations) were derived using models developed for the year 2015 by overlaying the x,y location of postcode centroids with NO2 and PM2.5 maps (25m x 25m resolution) within a geographic information system (GIS). Following analysis of changes in air pollution measurements over time, using routine monitoring data from the DEFRA-run Automatic Urban and Rural Network (AURN), we made adjustments to the 2015 modelled concentrations to estimate 2010 to 2019 exposures using a method know as ‘differencing’ (Gulliver et al. 2013).
Coverage
Spatial:
United Kingdom,England,London,Hillingdon,Westminster,Kensington and
Chelsea,Harrow,Brent,Ealing,Hounslow,Hammersmith and Fulham
Typical Age Range:
0-150
Follow Up:
1 - 10 Years
Pathway:
This table contains list of postcodes showing the pollution reading. Patient
pathway can be worked out by linking this table with the patient index table
available as part of London SDE.
Provenance
Origin
Purposes:
Study
Sources:
Other
Collection Situations:
Other
Temporal
Accrual Periodicity:
Annual
Distribution Release Date:
31 March 2019
Start Date:
31 March 2019
Time Lag:
Variable
Accessibility
Access
Access Rights:
Access Service:
Researchers will have access to a secure workspace via an airlocked Azure
Virtual Desktop with a specific username and password. Researchers will get
specific access to a relevant subset of the datasets that are present in the SDE
catalogue for their project and will be able to carry out their research within
the safe haven. There are restrictions applied which prevent the researchers
from taking data out of the safe haven. Once the research is completed the
London SDE admin team will need to be contacted for any requests to egress
summary analysis out of the safe haven which will not breach 5 safe standards.
Access Request Cost:
In Progress
Delivery Lead Time:
1-2 months
Data Controller:
Joint data controller model across London: North Central London Integrated Care
System (NCL ICS), Central London Integrated Care System (CL ICS), East London
Integrated Care System (EL ICS), West London Integrated Care System (WL ICS),
South London Integrated Care System (SL ICS)
Data Processor:
The data processor for the London Secure Data Environment (SDE) is primarily
managed by OneLondon, a partnership of London"s five integrated care systems
(ICSs) and three health innovation networks.
Usage
Data Use Limitations:
No restriction
Data Use Requirements:
- Collaboration required
- Geographical restrictions
- Project-specific restrictions
- Time limit on use
Resource Creators:
NHS NWL ICS;,;London SDE
Format and Standards
Vocabulary Encoding Schemes:
OTHER
Conforms To:
OTHER
Languages:
en
Formats:
- Excel
- SQL
- Tableau
- R
Enrichment and Linkage
Tools:
Derivations:
Long Term Conditions", "Electronic Frailty Index", "Q-Admissions", "Patient Segments", "Risk Segments
Observations
Statistical Population
Population Description
Population Size
Measured Property
Observation Date
Events
Air Pollution Estimates
4391067
Count
14 September 2021
Persons
Registered population
2193758
count
20 October 2022