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North West London Air Pollution Exposure Estimates

Population Size

2,193,758

People

Population Size statistic card

Years

2019

Years statistic card

Associated BioSamples

None/not available

Associated BioSamples statistic card

Geographic coverage

United Kingdom

England

...see more

Geographic coverage statistic card

Lead time

1-2 months

Lead time statistic card

Summary

Modelled concentrations of annual average nitrogen dioxide (NO2) and particulate matter with diameter <2.5µm (PM2.5) were linked to postcode centroids in Greater London. The pollution values are joined to NWL Registered population using current postcode.

Documentation

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).

Dataset type

Environment and energy

Dataset population size

2193758

Keywords

Observations

Observed Node

Disambiguating Description

Measured Value

Measured Property

Observation Date

Events

Air Pollution Estimates

4391067

Count

14 Sep 2021

Persons

Registered population

2193758

count

20 Oct 2022

Provenance

Purpose of dataset collection

Study

Source of data extraction

Other

Collection source setting

Other

Patient pathway description

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.

Image contrast

Not stated

Biological sample availability

None/not available

Structural Metadata

Details

Publishing frequency

Annual

Version

1.0.1

Modified

20/04/2026

Distribution release date

31/03/2019

Citation Requirements

NHS NWL ICS;,;London SDE

Coverage

Start date

31/03/2019

Time lag

Variable

Geographic coverage

United Kingdom, England, London, Hillingdon, Westminster, Kensington and Chelsea, Harrow, Brent, Ealing, Hounslow, Hammersmith and Fulham

Maximum age range

150

Follow-up

1 - 10 Years

Accessibility

Language

en

Alignment with standardised data models

OTHER

Controlled vocabulary

OTHER

Format

Excel, SQL, Tableau, R

Data Access Request

Dataset pipeline status

Not available

Access rights

https://discover-now.co.uk/make-an-enquiry/

Time to dataset access

1-2 months

Access request cost

In Progress

Access method category

TRE/SDE

Access service description

Researchers will have access to a VDI environment with a specific username and password. The researchers will get access to the datasets that is present in the SDE catalogue and would be able to carry out their research within the safe haven. There are restrictions applied which prevents the researchers from taking data out of the safe haven, once the research/analysis is completed the admin team will need to be contacted for taking the analysis off the safe haven.

Data use limitation

No restriction

Data use requirements

Time limit on use,Collaboration required,Project-specific restrictions,Geographical restrictions

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.

Investigations

https://discover-now.co.uk/the-data/data-access-requests/

Dataset Types: Environment and energy

Dataset Sub-types: Not applicable

Collection Sources: Other