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 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 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 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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User guides

BCS70 Age 38 User Guide

Guide to the dataset for the BCS70 age 38 survey


Date published: 1 August 2010
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User guides

NCDS6/BCS 2000- Guide to the Combined Dataset


Date published: 1 June 2001
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User guides

BCS70 Age 26 Guide to the Data

Guide to the 26 year follow up for BCS70


Date published: 1 May 1996
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User guides

BCS70 Age 5 Maternal Self-Completion Questionnaire User Guide

User Guide for the BCS70 Age 5 Maternal questionnaire


Date published: 1 May 1975
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Survey reports

BCS70 Birth Sweep Survey Report

Report for the initial sweep of BCS70


Date published: 1 May 1970
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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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