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Jt Comm J Qual Improv. 1993 Dec;19(12):566-75.

Toward the development of uniform reporting standards for managed care organizations: the Health Plan Employer Data and Information Set (Version 2.0).

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National Committee for Quality Assurance, Washington, DC 20005.


The cornerstone of HEDIS 2.0 is measurement. Only by measuring how a plan performs with respect to defined measures will an employer be able to assess a plan's value and also hold a plan accountable for its performance. Because of time and resource constraints, there are many issues related to the development and use of the performance measures contained within HEDIS 2.0 that have been incompletely addressed or not addressed at all. Following are some of the issues that warrant further consideration. Selection of performance measures. The present set of performance measures represents only a first attempt to define measures that document health plan performance in a number of areas of health care delivery. The resulting measures constitute a core data and information set and should not be considered to be an optimum set. Many other areas and measures of health plan performance were considered, including costs of specific episodes of care, age-specific utilization of defined services, patients receiving appropriate follow-up care for identified preventive health services, stage of cancer at time of diagnosis in relationship to preventive services screening, and functional outcome assessment. These measures were not included in this revision of HEDIS because of difficulties in developing specifications for the measure and/or in obtaining reliable data. It will be important to address these areas in the future. Risk adjustment of performance measures. To minimize the effects of population differences, most of the recommended performance measures assess discrete aspects of the process of care delivery (for example, percentage of pregnant women with first-trimester visit) rather than outcomes. However, interpretation of certain measures (for example, low birthweight, hospital readmission rate) will be affected by the specific member characteristics of the health plan population. Health plans and employers need to be aware of this limitation when interpreting and comparing certain performance measures, and further refinements will be needed in future ierations.(ABSTRACT TRUNCATED AT 400 WORDS).

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