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Geographic
Information Services (GIS) Mapping
Estimation of Migrant and Seasonal Populations
in Key States
Farmworker populations in 11 states were estimated in early
2000/01 using a standardized methodology developed by one
researcher, Dr. Alice Larsen. Dr. Larsen’s results are
available through the Bureau of Primary Health Care’s
web site, with links to NCFH and others. The 11 states documented
include Arkansas, California, Florida, North Carolina, Oregon,
Texas, Washing ton, Louisiana, Maryland, Mississippi and Oklahoma.
In an effort to support the growth of migrant health centers
through establishment of new access points and expansion of
services, NCFH has produced a Geographic Information Services
(GIS) Mapping presentation for each state based on Dr. Larsen’s
findings. These eleven presentations portray a special analysis
of the Larsen Enumeration Study on a county by county basis
for the 11 states listed above, in relation to existing community
and migrant health center sites. The purpose is two fold:
1) To identify counties with no federally funded migrant health
center sites where New Access Points might be appropriate,
and 2) To graphically depict the highest concentrations of
farmworker populations where existing Migrant Health Centers
can expand their services in order to serve more farmworker
patients.
Assuming that a minimum threshold of 2,000 farmworkers and
their family members is required in order to even consider
establishment of services, this study shows all counties with
2000 or more farmworkers as the primary target for growth.
In some cases, counties have significantly more than that
threshold number. Additional depictions indicate where adjoining
counties might have 500 -1,000 farmworkers each and can be
combined into one service area to create a critical mass.
It is important that potential applicants and the Bureau of
Primary Health Care understand that a service area with 2,000
farmworkers spread out over 4 counties could require a very
unique service delivery model, such as a voucher program,
in order to address this diffused need, depending on the size
of the counties.
Access to the GIS Analysis of the 11 states is available free
of charge through this link NCFH
GIS Mapping. It is designed to be very self-explanatory;
however NCFH staff is available to walk interested parties
through the presentation via teleconference, upon request.
If you have any questions or concerns, please do not hesitate
to contact us.
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