Documentation

Here you will find all the documentation for our studies. This includes survey questionnaires, interviewer instructions, showcards, technical reports, survey reports, and derived variables. For more information, take a look at our guide to the different documentation types.

  • 1970 British Cohort Study
  • Children of the 2020s study
  • COVID Social Mobility & Opportunities study
  • Early Life Cohort Feasibility Study
  • Millennium Cohort Study
  • National Child Development Study
  • Next Steps
  • linkage
  • Coding frames
  • Data notes
  • Derived variables
  • Ethical review and consent
  • Laboratory procedures
  • Questionnaires and interviewer instructions
  • Showcards
  • Survey reports
  • Technical reports
  • User guides

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User guides

Handling mode effects in the CLS cohort studies user guide summary (Nov 2024)

A summary to a user guide which provides guidance and recommendations for handling mode effects in CLS’ cohort studies through applied examples, using data from the National Child Development Study (NCDS) and Next Steps.

Date published: 26 November 2024

User guides

MCS User Guide to the Linked Education Administrative Datasets

This user guide accompanies the datasets linking education data to the records of MCS participants based in England.

Version 3 (November 2024)

Date published: 25 November 2024

User guides

Millennium Cohort Study and Welsh Health Data (SAIL) linked health datasets user guide

This user guide describes the data linkage of health administrative records from the Welsh Health Data to survey data for cohort members in the Millennium Cohort Study (MCS).

The Welsh Health Data were provided by SAIL Databank, which contains information about all hospital admissions in Wales.

Date published: 18 November 2024

User guides

Next Steps Age 32 Sweep – User Guide

This user guide provides information about the data arising from the Next Steps Age 32 sweep and supports the deposit of the data at the UK Data Archive.

Date published: 12 September 2024

Technical reports

Next Steps Age 32 Technical Report

This technical report accompanies the Next Steps Age 32 sweep.

Date published: 28 August 2024

Questionnaires and interviewer instructions

Next Steps Age 32 Online Short Mop-up Questionnaire

This questionnaire was given to non-response participants of the Next Steps Age 32 Sweep.

Date published: 17 July 2024

User guides

Handling missing data in the CLS cohort studies – User Guide

This user guide aims to describe and illustrate a straightforward approach to missing data handling, while detailing some more general considerations around missing data along the way.

Date published: 3 June 2024

test

Date published: 11 March 2024

User guides

NCDS Proteomics User Guide

Date published: 1 March 2024

Survey reports

Incorporating stakeholder findings into the design of the Early Life Cohort Feasibility Study

Date published: 29 February 2024

Contact us

Centre for Longitudinal Studies
UCL Social Research Institute

20 Bedford Way
London WC1H 0AL

Email: clsdata@ucl.ac.uk

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