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<span style='font-size:11.0pt;color:#595959;mso-themecolor:text1;
mso-themetint:166'>Design Inputs & Methodology</span>
<p style='margin-top:12.0pt;margin-right:0in;margin-bottom:
4.5pt;margin-left:0in;line-height:normal;background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>The
Indian Health Service Standard Codebook Community table was constructed from
multiple reference tables containing approved code sets in the General Data
Mart (GDM), specifically the community, county, and state tables. In
2007, </span><span style='font-size:13.5pt;font-family:"Helvetica",sans-serif;
mso-fareast-font-family:"Times New Roman";color:#595959;mso-themecolor:text1;
mso-themetint:166'>Dr. L. Layne with contributions from Kirk Greenway in
the IHS Office of Public Health Support designed a SAS program to join
these separate GDM tables together to derive the "IHS community"
table populated with information in the Standard Codebook Community table. </span><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>The Geographic
Names Information System (GNIS) dataset </span><span style='font-size:
13.5pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:"Times New Roman";
color:#595959;mso-themecolor:text1;mso-themetint:166'>containing information
about the official names for places in the United States and their associated
coordinates was also obtained from the U.S. Geological Survey website to assign
each IHS community a pair of point coordinates.</span><span style='font-size:
11.5pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:"Times New Roman";
color:#595959;mso-themecolor:text1;mso-themetint:166'></span></p>
<p style='margin-top:12.0pt;margin-right:0in;margin-bottom:
4.5pt;margin-left:0in;line-height:normal;background:white'><span style='font-size:13.5pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>Another
SAS program was then created to join records from the IHS Communities
derived table and the GNIS table to assign point coordinates to the communities
from the IHS Standard Codebook community table. This was performed by comparing
a community name between the two tables where the state and county FIPS were
required to match. The value in "FEATURE_CLASS" was further examined
to assign coordinates according to a hierarchical list of preferred location.
For example, if the value in FEATURE_CLASS was Populated Place, those
coordinates were assigned to the IHS community. If not, another class was
chosen. The coordinates assigned based on the values in FEATURE_CLASS were
selected with the following priorities: Populated Place, Locale, and the first
that matched the community name the program was searching for. Locations
for matched community name and county FIPS were used to assign a coordinates to
an IHS Community.</span><span style='font-size:11.5pt;font-family:"Helvetica",sans-serif;
mso-fareast-font-family:"Times New Roman";color:#595959;mso-themecolor:text1;
mso-themetint:166'></span></p>
<p style='margin-top:12.0pt;margin-right:0in;margin-bottom:
4.5pt;margin-left:0in;line-height:normal;background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>Communities
that did not have coordinates assigned to them were output to a separate data
table. Community names were cleaned for incorrect spelling, odd abbreviations
or name truncation due to field length restrictions. The corrected community
names were used to populate the "community name" field.
Locations for these communities were then compared to the GNIS data table again
and assigned coordinated to matched communities. </span><span style='font-size:11.5pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'></span></p>
<span style='font-size:11.0pt;color:#595959;mso-themecolor:text1;
mso-themetint:166'>IHS Communities Version 2021-04.0 Description</span>
<p style='margin-top:12.0pt;margin-right:0in;margin-bottom:
12.0pt;margin-left:0in;line-height:normal;background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>IHS
Communities Version 2021-04.0 contains additional fields/columns and data
giving users the option to refine the list of IHS communities by selecting
communities based on their proximity to federally-recognized tribal lands,
including federal Indian reservations, Indian trust-lands, off-reservation
trust lands, rancherias, colonies, pueblos, joint-use areas, Alaska Native
village statistical areas (<i>ANVSAs</i>), Oklahoma tribal statistical areas (<i>OTSAs</i>),
and tribal designated statistical areas (<i>TDSAs</i>). </span><span style='font-size:11.5pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'></span></p>
<p style='margin-top:12.0pt;margin-right:0in;margin-bottom:
12.0pt;margin-left:0in;line-height:normal;background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>IHS
Communities Version 2021-04.0 excludes inactive communities and
communities that fall within states not actively served by the IHS: Arkansas,
Delaware, Georgia, Indiana, Kentucky, Missouri, New Hampshire, New Jersey,
Ohio, and West Virginia.</span><span style='font-size:11.5pt;font-family:"Helvetica",sans-serif;
mso-fareast-font-family:"Times New Roman";color:#595959;mso-themecolor:text1;
mso-themetint:166'></span></p>
<p style='margin-top:12.0pt;margin-right:0in;margin-bottom:
12.0pt;margin-left:0in;line-height:normal;background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>The IHS
community point layer is one of IHS's four-core spatial datasets to facilitate
the analysis of epidemiology and health geography to improve health outcomes
for American Indians and Alaska Natives. The IHS GIS Team continually
updates, removes, and assigns coordinates to new communities listed in the
IHS Standard Codebook Community table. </span><span style='font-size:11.5pt;
font-family:"Helvetica",sans-serif;mso-fareast-font-family:"Times New Roman";
color:#595959;mso-themecolor:text1;mso-themetint:166'></span></p>
<p style='margin-top:12.0pt;margin-right:0in;margin-bottom:
12.0pt;margin-left:0in;line-height:normal;background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>Report
any errors or omission in this data to the IHS GIS Data Team
<gisdata@ihs.gov></span><span style='font-size:11.5pt;font-family:"Helvetica",sans-serif;
mso-fareast-font-family:"Times New Roman";color:#595959;mso-themecolor:text1;
mso-themetint:166'></span></p>
<p style='margin-top:12.0pt;margin-right:0in;margin-bottom:
12.0pt;margin-left:0in;line-height:normal;background:white'><span style='font-size:12.0pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>Include
pertinent details regarding your findings and the layer's official
name: IHS Communities Version 2021-04.0</span><span style='font-size:11.5pt;
font-family:"Helvetica",sans-serif;mso-fareast-font-family:"Times New Roman";
color:#595959;mso-themecolor:text1;mso-themetint:166'></span></p> |
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<p style='margin-top:12.0pt;margin-right:0in;margin-bottom:
12.0pt;margin-left:0in;line-height:normal;background:white'><span style='font-size:11.5pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>IHS
collects, creates, and distributes spatially enabled data and maps to support
federal health programs for American Indian and Alaska Natives. Please cite the
IHS Office of Public Health Support. </span></p>
<p style='margin-top:12.0pt;margin-right:0in;margin-bottom:
12.0pt;margin-left:0in;line-height:normal;background:white'><span style='font-size:11.5pt;font-family:"Helvetica",sans-serif;mso-fareast-font-family:
"Times New Roman";color:#595959;mso-themecolor:text1;mso-themetint:166'>Locations
of communities are approximate and should not be used to determine precise
geographic relationships. Like any other geospatial data set, its
usefulness and accuracy depends on your project's intended purpose, audience,
map scale, and extent. The IHS provides this data to users in the best
condition available at the time of release. </span></p> |