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Canberra Longitudinal Study
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Canberra Longitudinal Study

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The Canberra Longitudinal Study is a large epidemiological survey of mental health and cognitive functioning in a community based sample living in or near Canberra, Australia. The study aimed to investigate the epidemiology of cognitive decline, dementia and depressive disorders/symptoms over time and to identify factors influencing the course of cognitive decline and depression.

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Investigators Contacts
  • Andrew MacKinnon
    Centre for Mental Health Research, Australian National University
  • Anthony Jorm
    Centre for Mental Health Research, Australian National University
  • Helen Christensen
    Centre for Mental Health Research, Australian National University
  • Ruth Scott
    Centre for Mental Health Research, Australian National University
  • Scott Henderson
    Centre for Mental Health Research, Australian National University
  • Colleen Doyle
    Centre for Mental Health Research, Australian National University
  • Ailsa Korten
    Centre for Mental Health Research, Australian National University
  • Phil Batterham
    Centre for Mental Health Research, Australian National University

Conception

Study design
Cohort
Start Year
1990
End Year
2002
Follow Up

The study commenced in 1990, with subsequent waves in 1994, 1998 and 2002.

Marker Paper

Christensen, H., Mackinnon, A., Jorm, A. F., et al., (2004). The Canberra Longitudinal Study: Design, aims, methodology, outcomes, and recent empirical investigations. Aging, Neuropsychology, and Cognition, 11, 169‑195.

Recruitment

Sources of Recruitment
  • Individuals

Number of participants

Number of participants
1,045
Number of participants with biosamples
0

Access

Availability of data and biosamples

Data
Biosamples
Other
Yes
No
Not applicable
Don't know

Timeline

Populations

CLS population consist of people aged 70 and over, living in the community and residential care facilities of the Canberra/Queanbeyan region in 1990.

Selection Criteria
Minimum age
70
Newborns
Twins
Countries
  • Australia
Territory

Canberra/Queanbeyan region

Recruitment

Sources of recruitment
  • General population
General Population
  • Selected sample

Number of participants

Number of participants
896
Number of participants with biosamples
Data Collection Events
# Name Description Start End
0 CLS wave 1

Baseline assessments comprised of The Canberra Interview for the Elderly (CIE) which records diagnoses of dementia and contains the MMSE, National Adult Reading Test (a test of ...

 1990-07 1990-09
0 CLS wave 2

First follow-up of participants. Same methods as the baseline assessments.

 1994-06 1995-01
0 CLS wave 3

Second follow-up of participants. Same methods as the baseline assessments.

 1998-07 1998-12
0 CLS wave 4

Third follow-up of participants. Same methods as the baseline assessments.

 2002 2002

The sample consist of Individuals living in nursing homes and oversampled individuals aged 90 years of age and over.

Selection Criteria
Minimum age
70
Newborns
Twins
Countries
  • Australia
Territory

Canberra/Queanbeyan region

Recruitment

Sources of recruitment
  • Specific population
Specific Population
  • Other specific population :

    Living in nursing homes

Number of participants

Number of participants
100
Number of participants with biosamples
Data Collection Events
# Name Description Start End
0 CLS wave 1

Baseline assessments comprised of The Canberra Interview for the Elderly (CIE) which records diagnoses of dementia and contains the MMSE, National Adult Reading Test (a test of ...

 1990-07 1990-09
0 CLS wave 2

First follow-up of participants. Same methods as the baseline assessments.

 1994-06 1995-01
0 CLS wave 3

Second follow-up of participants. Same methods as the baseline assessments.

 1998-07 1998-12
0 CLS wave 4

Third follow-up of participants. Same methods as the baseline assessments.

 2002 2002