ELSA English Longitudinal Study of Ageing Future Activities Carli Lessof National Centre for Social Research Introductory workshop to the English Longitudinal.
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ELSAEnglish LongitudinalStudy of Ageing
Introductory workshop to the English Longitudinal Study of Ageing
5 July 2005
Royal Statistical Society, London
Future ActivitiesFuture Activities
Carli LessofCarli LessofNational Centre for Social ResearchNational Centre for Social Research
HSE 1998& Nurse Visit
HSE 1998& Nurse Visit
ELSA Wave One 2002/3Core Interview (12,100 respondents)
ELSA Wave One 2002/3Core Interview (12,100 respondents)
ELSA Wave Two 2004/5Core Interview + Nurse Visit
ELSA Wave Two 2004/5Core Interview + Nurse Visit
ELSA Wave Three 2006/7Core Interview + Retrospective Interview
ELSA Wave Three 2006/7Core Interview + Retrospective Interview
The English Longitudinal Study of AgeingThe English Longitudinal Study of Ageing
HSE 1999& Nurse Visit
HSE 1999& Nurse Visit
HSE 2001& Nurse Visit
HSE 2001& Nurse Visit
ELSAEnglish LongitudinalStudy of Ageing
Survey Content at Wave 3Survey Content at Wave 3
As at Wave 2 core modules remain
Repeat cross-sectional questions Dependent interviewing where prior data is available (Temporary) removal of some questions
Some additions Revisions to health questions e.g. dental health Take-up of benefit Expectations of life expectancy Reintroduction of questions e.g. GHQ12, social capital Vignettes Experimental module on diet and physical activity
ELSAEnglish LongitudinalStudy of Ageing
Major Changes at Wave 3Major Changes at Wave 3
Continuation with Institutional and Exit interviews
Introduction of refreshment sample
Longevity of the study
Key pre-retirement group and cohort effects
Aged 50-53 and their younger (and older) partners
Current plan for HSE 2001, 2002, 2003
Retrospective interview
ELSAEnglish LongitudinalStudy of Ageing
ELSA Life History Data ELSA Life History Data
Background and motivation
Development timetable
Methodology
Content
Validation
ELSAEnglish LongitudinalStudy of Ageing
Why Collect Life History Data?Why Collect Life History Data?
History of birth cohort studies in Britain
Shown influence of early and mid life events
Identified social and biological chains of risk
ELSA has a relatively large fraction life unobserved
Are there measures we can obtain that will help explain future outcomes and trajectories?
National Survey of Health and Development (NSHD)Those living in GB born 3-9 March, 1946
National Survey of Health and Development (NSHD)Those living in GB born 3-9 March, 1946
National Child Development Study (NCDS)All those living in GB born 3-9 March, 1958
National Child Development Study (NCDS)All those living in GB born 3-9 March, 1958
1970 British Cohort Study (BCS70)All those living in GB born 5-11 April, 1970
1970 British Cohort Study (BCS70)All those living in GB born 5-11 April, 1970
Millennium Cohort Study (MCS)All those born in selected areas of UK over 12 months
beginning September 2000 in England and Wales, and December 2000 in Scotland and Northern Ireland
Millennium Cohort Study (MCS)All those born in selected areas of UK over 12 months
beginning September 2000 in England and Wales, and December 2000 in Scotland and Northern Ireland
The four British birth cohort studiesThe four British birth cohort studies
ELSAEnglish LongitudinalStudy of Ageing
UK Cohort dataUK Cohort data
Year of birth
Age
50
1946 1958 1970 2000NSHD NCDS BCS MC
ELSAEnglish LongitudinalStudy of Ageing
UK Cohort dataUK Cohort data
100
50
1902 ELSA
Year of birth
Age
1946 1958 1970 2000NSHD NCDS BCS MC
1952
ELSAEnglish LongitudinalStudy of Ageing
UK Cohort dataUK Cohort data
100
50
1946 1958 1970 2000NCHD NCDS BCS MC
Year of birth
Age
1902 ELSA 1956
ELSAEnglish LongitudinalStudy of Ageing
UK Cohort dataUK Cohort data
100
50
1946 1958 1970 2000NCHD NCDS BCS MC
Year of birth
Age
1902 ELSA 1956
ELSAEnglish LongitudinalStudy of Ageing
UK Cohort dataUK Cohort data
100
50
1946 1958 1970 2000NCHD NCDS BCS MC
Year of birth
Age
1902 ELSA 1956
ELSAEnglish LongitudinalStudy of Ageing
Types of Life History Data CollectedTypes of Life History Data Collected
Measures in core questionnaire
Administrative data
Retrospective survey to cover life pre-ELSA
ELSAEnglish LongitudinalStudy of Ageing
Recall data in ELSA baseline/core (1)Recall data in ELSA baseline/core (1)
Early life events Who study member lived with in childhood Employment of study member’s father/parent when 15
Education At HSE asked for highest educational qualification At Waves 1, 2 & future waves ask for new qualifications
Relationships and fertility Household membership and relationships from W0 Living children (within and outside household) from W1
ELSAEnglish LongitudinalStudy of Ageing
Housing and geographical mobility Address and characteristics of home from W0 (HSE) Postcode related information about area
Health events Major health events ever and since last wave
Jobs, income and pensions Job, NS(SEC), SOC2000 from W0 onwards
Including main job for those already retired
Recall data in ELSA baseline/core (2)Recall data in ELSA baseline/core (2)
ELSAEnglish LongitudinalStudy of Ageing
Linkage to administrative dataLinkage to administrative data
NHS Central Register
Employer (for private pension plan details)
Hospital Episodes database
National Insurance contributions (post 1978)
Benefits (incl. state pension payments) and tax credits
(post 1999)
ELSAEnglish LongitudinalStudy of Ageing
Development of the Retrospective InterviewDevelopment of the Retrospective Interview
Design and content in development
Decisions are inter-linked
Pre-pilot September 2005
Pilots in approx November 2005 and January 2006
ELSAEnglish LongitudinalStudy of Ageing
Design and methodologyDesign and methodology
Life-grid methods good for ‘autobiographical’ recall Berney and Blane; Belli instrument for PSID
But in addition we will want Detailed routed follow-ups for events/spells
More general retrospective recall items
Paper, computer or hybrid methodology Combine life-grid with recall follow-ups delivered by CAPI
ELSAEnglish LongitudinalStudy of Ageing
Design questions Design questions
Individual (but may check demographics with couples)
Same interviewer
Immediate follow-up (off-year survey in 2007 possible)
Feed forward from ELSA core or independence
Degree of precision - year, decade, life-stage
ELSAEnglish LongitudinalStudy of Ageing
Content: General principlesContent: General principles
Motivation for inclusion of topics/questions that are: Predictive of late life events and trajectories
Prevalent
Recalled with acceptable degree of precision
We will not have topics that are solely of interest for: Modelling trajectories pre-ELSA
Understanding cross-sectional prevalence of early life factors for older cohorts
ELSAEnglish LongitudinalStudy of Ageing
Content (1): Family and demographicsContent (1): Family and demographics
Place of birth and subsequent residences
Location and tenure; characteristics; area characteristics
Periods evacuated, abroad, in army, in institutions
Marriage / divorce / cohabitation / widowhood
Pregnancies and births
Parents age and cause of death
Quality of relationships with parents, sibs, carers
ELSAEnglish LongitudinalStudy of Ageing
Content (2): Early lifeContent (2): Early life
Education history
Indicators of material circumstances: bath/indoor toilet/water supply; shared bedrooms; books
Relationship with parents
ELSAEnglish LongitudinalStudy of Ageing
Content (3): EmploymentContent (3): Employment
Start and end of job (and employer) spell
Full time / part time
Pension membership (Yes/No)
Earnings when started; earnings when stopped
Job characteristics
Physical, intellectual, emotional demands of work;
control and effort/reward in job; exposure to risk
ELSAEnglish LongitudinalStudy of Ageing
Content (4): Health Content (4): Health
History of CVD, cancers and osteoarthritis
Information about hospitalisations and operations
Serious injuries
Smoking history - times stopped started/periods
Age of menarche and menopause
ELSAEnglish LongitudinalStudy of Ageing
Content (5): Other Life-eventsContent (5): Other Life-events
Migrant experiences
Whether life similar to parents / children
Subjectively most important life events
ELSAEnglish LongitudinalStudy of Ageing
Some possible validation exercisesSome possible validation exercises
Overlap between prospective and retrospective accountsfor example in housing transitions and employment spells
Comparing administrative health data with retrospective histories e.g. knee replacements and other surgery
Compare National Insurance Contribution records with accounts of employment history, opting out of SERPS, etc
Comparison to NCHD and NCDS cohort histories
HSE 1998& Nurse Visit
HSE 1998& Nurse Visit
ELSA Wave One 2002/3Core Interview (12,100 respondents)
ELSA Wave One 2002/3Core Interview (12,100 respondents)
ELSA Wave Two 2004/5Core Interview + Nurse Visit
ELSA Wave Two 2004/5Core Interview + Nurse Visit
ELSA Wave Three 2006/7Core Interview + Retrospective Interview
ELSA Wave Three 2006/7Core Interview + Retrospective Interview
The English Longitudinal Study of AgeingThe English Longitudinal Study of Ageing
HSE 1999& Nurse Visit
HSE 1999& Nurse Visit
HSE 2001& Nurse Visit
HSE 2001& Nurse Visit
ELSA Wave Four 2008/9Core Interview + Nurse Visit
ELSA Wave Four 2008/9Core Interview + Nurse Visit
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