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Figure 8 Improvement in treatment rates for beta-blocker therapy and post-myocardial infarction (MI) patients from 1996 to 1999 in National Committee for Quality Assurance-accredited health plans, where quality indicators are made public and health systems have an incentive to improve. Note that the rate of post-MI beta-blocker use increased from 62.2% to 85% over this four-year period.

Reprinted with permission from the National Committee for Quality Assurance. The State of Managed Care Quality Report. 2000:30. ©2000 by NCQA (27).