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The objective of the Canadian
Longitudinal Study on Aging (CLSA), is to provide longitudinal information in
order to answer analytical research questions involving the process of aging
within Canadians while looking at different biological, physical, psychological
and social measures.  Researchers
involved with the CLSA have designed the study to examine and track health
transitions as well as functions within the participants, having the goal be,
to have a better understanding of issues regarding certain determinants of
health when Canadians transition into their later years. The design of the
research study allows researchers to follow participants throughout many years
of life, while performing routine checkups every three years to capture
important changes within the participant’s health.

            When looking at the population
selected to participate in the Canadian Longitudinal Study on Aging, the
population accounted for was not gender specific (both male and female) and had
an age range from 45 to 85 years of age. The age range was selected to start at
45 in order to track potential mobility limitations at a younger age and the effects
of this as one gets older. The study’s population consisted of roughly 50,000
participants that are located all across Canada, in both urban and rural settings,
institutionalized and not, as well as from a variety of social classes.
Participants involved with the study were put into two main groups; a tracking
group as well as a comprehensive group. The comprehensive group consisted of
30,000 participants who were selected due to a random digit dialing, taken from
their local healthcare registration databases. Researches used a random digit
dialing system in order to prevent bias among the population participating in
the study. Those who were contacted were given the opportunity to receive more information
pertaining to the study, in order to comprehend what it meant to participate.  Those who agreed to participate and fell
within a certain distance from one of the 11 main universities conducting the
research, were put into the comprehensive group. These participants were given
questionnaires to fill out as well as physical examinations were conducted
every 3 years to track the aging process. With the second group known as the
tracking group, the same data collection process was implemented, with this
group containing 20, 000 participants who strictly participated with
questionnaires and phone interviews rather than physical examinations. Additionally,
with this group of participants that fell into the tracking category had checkups
every 3 years as well to follow their changes in well-being. Overall, the study
is conducted for all participants over a 20-year span, or until the death of a participant,
leaving researchers valuable information about the aging process in regard to
the changes in the participants biological, physical, psychological and social well-being.

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            Along with the information portrayed
on the Canadian Longitudinal Study on Aging website, additional articles
obtaining information on the Canadian Longitudinal Study in Aging can be found
in the following publications: