For PWHS, the GASH definition usually includes most of the hospital's primary service area and occasionally a town or two in the secondary service area.
For PWHS, for example, one town fell within the 75 percent threshold one year but not the next.
To ensure the needs of residents in outlying parts of the service area are met, PWHS subdivides the service area into geographic clusters and develops recruitment targets to address physician shortages in those communities.
Once the service area is determined, PWHS uses commercially available population projections to estimate the number of people now in the service area and projected community population, typically five years out.
Important considerations for PWHS include the rapid historical and projected population growth and the comparatively young age composition.