Version: 1.0.4 | Published: 21 Aug 2026 | Updated: 11 days ago
Summary
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).
In Pipeline:
Not available
Coverage
Spatial:
- United Kingdom
- England
- London
- Hillingdon
- Westminster
- Kensington and Chelsea
- Harrow
- Brent
- Ealing
- Hounslow
- Hammersmith and Fulham
Typical Age Range Min:
0
Typical Age Range Max:
150
Material Type:
None/not available
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
Purpose:
Study
Dataset Type:
Environment and energy
Dataset Sub-Type:
Not applicable
Source:
Other
Collection Source:
Other
Image Contrast:
No
Temporal
Publishing Frequency:
Annual
Distribution Release Date:
31 March 2019
Start Date:
31 March 2019
Time Lag:
Variable
Accessibility
Access
Access Rights:
London Secure Data Environment Enquiry Form
Access Service Category:
TRE/SDE
Access Service:
Researchers will have access to a secure workspace via an airlocked Azure
Virtual Desktop with a specific username and password, MFA (multi-factor
authentication) and OAUTH (open authentication). 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 secure data
environment disclosure control standards.
Access Request Cost:
Access costs will be determined on a project-by-project basis and will depend on
the specific data requirements, platform setup, and any additional services
needed to deliver the project successfully.
Delivery Lead Time:
1-2 months
Data Controller:
Participating London health care organisations act as Joint Data Controllers
within the London SDE. These organisations include for example GP Practices and
Acute Providers from across London.
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. NHS North East London ICB hosts
OneLondon and operates the London Data Service (LDS) as a data processor on
behalf of those organisations, whilst Imperial College Healthcare NHS Trust
hosts the London Analytics Platform (LAP), with Imperial NHS Trust acting as the
data processor for data processing activities undertaken within the platform.
Jurisdiction:
United Kingdom of Great Britain and Northern Ireland
Usage
Data Use Limitation:
No restriction
Data Use Requirements:
- Collaboration required
- Geographical restrictions
- Project-specific restrictions
- Time limit on use
Resource Creator:
- NHS NWL ICS
- London SDE
Format and Standards
Vocabulary Encoding Scheme:
OTHER
Conforms To:
OTHER
Language:
English
Format:
Text
Enrichment and Linkage
Investigations:
Tools:
Publication About Dataset:
Not Available
Derived From
PID
Title
URL
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
Origin
Name:
NWL Data Catalogue