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The
project: Method
In
April 1996, women in three age groups (18-23 years, 45-50
years and 70-75 years) were selected from the Medicare database,
which is maintained by the Health Insurance Commission and
contains the name and address details of all Australian citizens
and permanent residents. These women were sent an invitation
to participate in a 20 year study of health and health service
use. Over 40,000 women responded to this initial invitation
and agreed to participate in the project for 20 years.
The
three age groups were selected in order to follow women through
life stages which are critical to women’s health and
well-being. We began tracking the younger age group when they
were in the early stages of transition from late adolescence
to full adulthood, and over time most of them are moving into
the workforce, entering adult relationships, and becoming
mothers. The mid-age group was selected to examine menopausal
transitions and the social and personal changes of middle
age. The older group were selected in their early 70s, to
recruit older women who are generally still active, involved
members of the community. These women are being tracked to
obtain information on predictors of continuing well-being
and independence in older adult life.
Sampling from the population was random within each age group,
except that women from rural and remote areas were sampled
at twice the rate of women in urban areas. This oversampling
meant that the numbers living outside major urban areas were
large enough to allow statistical comparisons of the circumstances
and health of city and country women, an important issue for
Australia now and in the future. Women's Health Australia
is the largest study of health issues in rural and remote
parts of Australia.

Location
of participants*
*Each
dot represents the centroid of a postcode with at least
one participant
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Each age cohort is surveyed once every
three years, via surveys sent in the mail, to see how their
health has changed. The longitudinal study design, by which
the same women are followed for 20 years, means that the study
is able to clarify cause-and-effect relationships and to assess
the effects of changes in policy and practice.
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Schedule of main surveys |
As well as these main surveys, women
are invited to participate in a variety of substudies. These
surveys target particular areas of health, and have covered
a wide range of topics including sleeping difficulties and
disturbances, domestic violence, menopausal problems, urinary
incontinence, leisure and time use, diabetes and the future
plans of young women.
This information is helping
to shape the future of both health policy and services.
See
also:
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