User:Thirdpickerel/Medically Underserved Area/Populations

Medically Underserved Area is a federal designation based on the Index of Medical Underservice (IMU). The components of the index are:
 * Ratio of primary care physicians to population
 * Infant mortality rate
 * Percentage of the population with incomes below the poverty level
 * Percentage of the population age 65 or older

The results are weighted using a formula published in the Federal Register in 1976. Currently, an IMU under 62 is considered medically underserved.

The size of the area depends on the geography and may be a census tract or group of census tracts, a county, or a group of counties.