The Canadian Longitudinal Study on Aging (CLSA) is a large, national, long-term study that will follow approximately 50,000 men and women between the ages of 45 and 85 for at least 20 years. The study will collect information on the changing biological, medical, psychological, social, lifestyle and economic aspects of people’s lives. These factors will be studied in order to understand how, individually and in combination, they have an impact in both maintaining health and in the development of disease and disability as people age.

Access

Access to external researchers or third parties provided or foreseen.

Data (questionnaire-derived, measured...)

Biosamples

Marker Paper

Raina PS, Wolfson C, Kirkland SA, Griffith LE, Oremus M, Patterson C, Tuokko H, Penning M, Balion CM, Hogan D, Wister A, Payette H, Shannon H, and Brazil K, The Canadian longitudinal study on aging (CLSA). Can J Aging, 2009. 28(3): p. 221-9.

PUBMED 19860977

Study Timeline

Each colour in the timeline graph below represents a separate Study Population, while each segment in the graph represents a separate Data Collection Event. Clicking on a segment gives more detailed information on a Data Collection Event.

Populations

CLSA sub-population (Telephone interview)

Representative sample of the Canadian population. 

Sources of Recruitment

Participants from Existing Studies Canadian Community Health Survey (CCHS) - Healthy Aging
Supplementary Information

CCHS cycle 4.2 would be used as the recruitment vehicle for the telephone interview cohort.

Selection Criteria

Age Minimum age 45, Maximum age 85
Country Canada
Health Status Exclusion of cognitively impaired individuals
Other
Language: Individuals who are able to respond in either French or English. 
The CLSA uses the same exclusion criteria as the Statistics Canada Canadian Community Health Survey – Healthy Aging. Excluded from the study are:
  • Residents of the three territories
  • Full-time members of the Canadian Forces
  • Individuals living in long-term care institutions (i.e., those providing 24-hour nursing care). However, those living in households and transitional housing arrangements (e.g., seniors’ residences, in which only minimal care is provided) will be included. CLSA cohort participants who become institutionalized during the course of the study will continue to be followed either through personal or proxy interview.
  • Persons living on reserves and other Aboriginal settlements. However, individuals who are of First Nations descent who live outside reserves are included in the study.

Sample Size

Number of Participants

20,000

Data Collection Events

NameDescriptionStartEnd
Baseline Recruitment

The first selection of the participants of the...

20082013
Follow-up one

The first follow-up of the CLSA participants...

20152018

CLSA sub-population (In-depth)

Representative sample of the canadian population who agreed to a physical examination component.

Sources of Recruitment

General Population
  • Selected sample
Supplementary Information

Provincial health registration databases for recruitment of the in-depth cohort. Individuals residing within a 25-50 kilometer radius of the 11 DCSs (Vancouver, Victoria, Surrey, Calgary, Winnipeg, Hamilton, Ottawa, Montreal, Sherbrooke,  Halifax, and St. John’s) are over-sampled for inclusion in the in-dept Cohort. 

Selection Criteria

Age Minimum age 45, Maximum age 85
Country Canada
Territory

Vancouver, Victoria, Surrey, Calgary, Winnipeg, Hamilton, Ottawa, Montréal, Sherbrooke, Halifax, and St. John’s

Health Status Exclusion of cognitively impaired individuals at the time of recruitment.
Other
Language: Individuals who are able to respond in either French or English.
The CLSA uses the same exclusion criteria as the Statistics Canada Canadian Community Health Survey – Healthy Aging. Excluded from the study are:
  • Residents of the three territories
  • Full-time members of the Canadian Forces
  • Individuals living in long-term care institutions (i.e., those providing 24-hour nursing care). However, those living in households and transitional housing arrangements (e.g., seniors’ residences, in which only minimal care is provided) will be included. CLSA cohort participants who become institutionalized during the course of the study will continue to be followed either through personal or proxy interview.
  • Persons living on reserves and other Aboriginal settlements. However, individuals who are of First Nations descent who live outside reserves are included in the study. 

Sample Size

Number of Participants

30,000

Number of Participants with Biosamples

30,000

Data Collection Events

NameDescriptionStartEnd
Baseline Recruitment

The recruitment of the comprehensive cohort is...

20122015
Follow-up one

The first follow-up of the CLSA participants...

20152018
Loading...
Loading...

Variable Classification