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.
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User guides
NCDS Hospital Episode Statistics (HES) User Guide
This guide describes the data linkage of health administrative records from the Hospital Episode Statistics (HES) to survey data for cohort members in the National Child Development Study (NCDS). User guide updated: 2025.
Date published: 1 September 2022
Technical reports
BCS70 Video Call Pilot
Report on pilot to explore feasibility of using computer-assisted video interviewing with BCS70 cohort members
Date published: 3 August 2022
Questionnaires and interviewer instructions
BCS70 Age 51 Sweep – Content Summary
BCS70 Age 51 Sweep – Content Summary
Date published: 3 August 2022
User guides
BCS70 Age 16 Survey Leisure and Television Diaries User Guide
Date published: 1 April 2022
User guides
Bristol Social Adjustment Guide Forms at ages 7 and 11 – User Guide
This document has been prepared to accompany the deposit with the UK Data Service at the University of Essex, of all available completed Bristol Social Adjustment Guide forms collected in sweeps 1 and 2 of the National Child Development Study when cohort members were seven years old in 1965 and eleven years old in 1969.
Date published: 3 March 2022
Data notes
Next Steps continuous weekly income – Note
We have recently detected a bug in the code used to derive continuous weekly income at age 25 (W8DINCW). We debugged the code and have now redeposited the amended variable. It was made available for download via the UK Data Archive in July 2021.
Date published: 8 November 2021
User guides
Next Steps Linked Student Loans Company Administrative Datasets – User Guide
This guide describes the data linkage of student loans data from the Student Loans Company (SLC) to survey data for cohort members in Next Steps.
Date published: 18 October 2021
User guides
Next Steps Age 25 Survey – User Guide
This user guide provides information about the data arising from the Next Steps Age 25 sweep and supports the deposit of the data at the UK Data Archive.
Date published: 15 July 2021
Questionnaires and interviewer instructions
NCDS Age 62 Sweep – Content Summary
National Child Development Study Age 62 Survey – Overview of Content April 2021
Content of main CAPI Interview
Content of ‘Your Life Now’ Self-Completion
Content of the Life History Questionnaire – ‘Childhood’
Online Diet Questionnaire
Nurse Visit – Bio-measures
Date published: 20 April 2021
User guides
User guide to the MCS linked health administrative datasets – Scottish Medical Records (SMR)
This user guide describes the linkage of medical records, child health reviews and prescription and immunisation records in Scotland (henceforth “Scottish Medical Records”) to cohort members’ data in the Millennium Cohort Study (MCS).
Date published: 15 February 2021
Centre for Longitudinal Studies
UCL Social Research Institute
20 Bedford Way
London WC1H 0AL
Email: clsdata@ucl.ac.uk
