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Institute of Epidemiology & Health Care

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CeLSIUS

We enable research using the Office for National Statistics (ONS) Longitudinal Study - the largest nationally representative longitudinal dataset in the UK

Longitudinal studies follow the lives of individuals over a long period of time, showing us how people are affected by changes in society. The ONS Longitudinal Study contains the census data and some life events data of approximately one million sample members, collected over 40 years. This service is free to the user.

About the ONS Longitudinal Study

About the ONS Longitudinal Study

Find out more about the study

About the ONS Longitudinal Study

Using the ONS Longitudinal Study

Find out how to access and use the data

Data dictionary

Data dictionary

Look up the variables in the study

Celsius Resources

Resources

Information and guidance to help you use the data

Research at Celsius

Research

Current and past LS projects and the outputs resulting from this research

About Celsius

About CeLSIUS

Meet the team

Wordpress dashboard

Linking our Lives Blog

Our blog showcases outstanding research using the LS 

Podcasting

Linking our Lives Podcast

In conversation with researchers and users of LS research

Folders

Research and policy briefs

Policy and research briefing notes on research using the LS

News

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You can now view the recording of our 13th September 2021 event: CeLSIUS: ONS Longitudinal Study online training

 This event included the following presentations and practical sessions:

  • What is the ONS LS?
  • How do I get to use it?
  • What research can I do?
  • Bespoke synthetic data in the ONS LS
  • Practical 1: Live synthetic SYLLS analysis using STATA
  • Practical 2: Applying to use the ONS LS and becoming an ONS accredited researcher

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A gold mine of information: 50 years of the ONS LS

The second episode of our podcast series, Linking our Lives: England and Wales since 1971, is now available. We ask ONS' Rich Pereira how the LS has become such a gold mine of information about how our society has changed over time.

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'Households and families' guide to using ONS LS data

A new guide to households and families data in the ONS LS is now available, along with guides to births and fertility, defining a study population, ethnicity, events, mortality and socio-economic indicators.

More news and events