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Centre for Longitudinal Study Information and User Support
UCL RESEARCH DEPARTMENT OF EPIDEMIOLOGY AND PUBLIC HEALTH

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Welcome to 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

Using 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

Resources

Resources

Information and guidance to help you use the data

Research

Research

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

About CeLSIUS

About CeLSIUS

Meet the team

Latest news & events

CeLSIUS Easter closure

UCL will be closed for Easter holidays from Wednesday 17th April to Monday 22nd April, inclusive, i.e. opening again for business as usual on Tuesday 23rd April.  During this time there will be no CeLSIUS service so please bear this in mind when planning to visit the SRS or send files.

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Booking the safe setting in advance, at ONS in Pimlico

The safe setting at ONS in Pimlico has become very busy, so we now advise that you book your visit two weeks in advance when possible and that you suggest more than one date for your visit. To book, email research.support@ons.gov.uk.

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UK Census Longitudinal Studies First Annual Conference:  8th - 9th April 2019, Queen’s University Belfast

This event is organised by the three UK census longitudinal studies to showcase research and build research capacity amongst existing and prospective users. The first day of the conference will present research findings from across the UK and set the UK experience in a wider context with an international panel. The second day will offer two parallel workshops. One strand will provide ‘safe researcher training’ to certify attendees to use longitudinal data across the UK. The second will be concerned with the development of research ideas and seeking research funding. Find out more and book your place

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Webinar: Education in the long run - which data are available? Held on 2 April 2019

Jointly organised by CeLSIUS and the UK Data Service, the webinar is for those who would like to know more about sources of data available for investigating education. It will focus particularly on longitudinal data but also touch on available cross-sectional sources.

The session will explore:

  • The range of longitudinal data on education available from the UK Data Service, including harmonised data, such as ‘Understanding Society: Waves 1-8, 2009-2017' and 'Harmonised BHPS: Waves 1-18, 1991-2009‘
  • The ONS Longitudinal Study, including the data structure, available research topics (with a focus on education) and procedures for access. Some results will be  presented on how education relates to economic activity status through the life-course in a historical sample of young men and women
  • The value of using of longitudinal data for educational research purposes: case studies

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Webinar: Journey to work data in the UK - what data are available?, held on 12 March 2019

Jointly organised by CeLSIUS and the UK Data Service, the webinar will explore journey to work data in the UK, focussing on data from the census, in particular the longitudinal studies, including:

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Webinar: An update on ONS's plans to transform the population and migration statistics system, held on 7 March 2019

Jointly organised by CeLSIUS and the UK Data Service. Administrative data are a rich source of data and have the potential to transform the way in which we gather demographic data. In this webinar, hosted by the UK Data Service, Becky Tinsley, ONS's Head of Admin Data Census, and Becca Briggs, from ONS's Migration Statistics Division, will outline the background to the Administrative Data Census project and focus on the recent publication updating on the journey to transform the population and migration statistics system, and the ambition to put admin data at its core.

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ONS in Pimlico safe setting reminder

Please note that to contact the CeLSIUS team when using LS data in ONS London, you need to phone 020 7592 8632 (8632 internally) or one of the other numbers displayed on the safe setting wall. This is because we are no longer on the Red Route, along which you are permitted to move; we must therefore escort you to our desks. You are encouraged not to let this deter you – we are always pleased to meet LS users face-to-face.

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