Index of Medical Underservice


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Index of Medical Underservice

An index created by the US Department of Health and Human Services based on data on a medical service area of the USA to obtain a score for the area. The IMU scale is a percentage from 0 to 100: a score of 0% represents a completely underserved area; 100% represents best served/least underserved. Under established criteria, any service area with an IMU of ≤ 62.0% qualifies as a medically underserved area.

The IMU involves four variables: ratio of primary medical care physicians per 1,000 population; infant mortality rate; percentage of the population with incomes below the poverty level; and percentage of the population age 65 or over.
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