Term: Equivalent Services Measure (ESM)
Last Updated: 2009-02-26
A standardized measure of service provision that enables researchers to use tariff codes over time regardless of any changes in the fee associated with them. The ESM is a numerical value standardized based on the dollar value of a tariff in 2004 or the most recent year that it was used if this was prior to 2004. The ESM accounts for the effects of inflation and reflects the intensity of the service.