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.

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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
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User guides

BCS70 Age 46 Survey User Guide

User guide for the BCS70 age 46 biomedical survey dataset.


Date published: 27 July 2023
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User guides

BCS70 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 1970 British Cohort Study (BCS70).


Date published: 8 February 2021
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User guides

BCS70 Age 34 User Guide

User guide to the dataset for the age 34 sweep of BCS70


Date published: 22 April 2020
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User guides

BCS70 Age 46 Survey – Accelerometry User Guide

Accelerometry user guide for the BCS70 age 46 biomedical survey dataset


Date published: 27 March 2020
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User guides

BCS70 Age 46 Survey Secure Access Geographical Identifiers User Guide

User guide for the BCS70 Age 46 Survey Secure Access Geographical Identifiers


Date published: 3 October 2019
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User guides

BCS70 Activity Histories (1986-2013) Guide


Date published: 1 July 2017
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User guides

BCS70 Partnership Histories (1986-2013) Guide


Date published: 1 October 2016
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User guides

BCS70 Age 5 Developmental Histories User Guide

User Guide to the BCS Developmental History Data


Date published: 1 July 2014
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User guides

BCS70 Age 10 Audiogram data User Guide

This document provides a brief guide to the Audiogram data obtained for 14,903 subjects of the 1970 British Cohort Study (BCS70) during the 10-year follow-up in 1980


Date published: 1 March 2014
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User guides

BCS70 Age 42 User Guide

User guide for the BCS70 age 42 survey dataset


Date published: 1 February 2014
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Derived variables

BCS70 Age 5 Sweep Derived Variables

A description of the derived variables in the age 5 sweep of the 1970 British Cohort Study


Date published: 1 February 2013
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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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