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.
Showing 433 results.
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.
Updated: Version 2 on March 2026
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
Survey reports
Early Life Cohort Feasibility Study: Participant materials appendices
Date published: 28 February 2024
Survey reports
Early Life Cohort Feasibility Study: Branding and name consultation report
Findings from IFF Research focus groups on Early Life Cohort Feasibility Study brand and taking part in a birth cohort study.
Date published: 16 February 2024
Survey reports
Early Life Cohort Feasibility Study: Participant materials report
This report details findings from qualitative research that set out to understand views towards the Early Life Cohort Participant Study engagement materials and key study processes to contribute to their development.
Date published: 15 February 2024
Centre for Longitudinal Studies
UCL Social Research Institute
20 Bedford Way
London WC1H 0AL
Email: clsdata@ucl.ac.uk
