• Claire Snyder and Gerard Anderson.
• Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205-1901, USA. claire.snyder@alumni.duke.edu <claire.snyder@alumni.duke.edu>
• JAMA. 2005 Jun 15; 293 (23): 2900-7.

ContextQuality improvement organizations (QIOs) are charged with improving the quality of medical care for Medicare beneficiaries.ObjectiveTo explore whether the quality of hospital care for Medicare beneficiaries improves more in hospitals that voluntarily participate with Medicare's QIOs compared with nonparticipating hospitals. DESIGN, SETTING, AND DATA: Data from 4 QIOs charged with improving the quality of care in 5 states (Maryland, Nevada, New York, Utah, and Washington) and the District of Columbia were used. Hospitals participate with the QIOs on quality improvement on a voluntary basis. A retrospective study was conducted comparing improvement in the quality of care of patients in hospitals that actively participated with the QIOs vs hospitals that did not. The medical records of approximately 750 Medicare beneficiaries per state in each of 5 clinical areas (atrial fibrillation, acute myocardial infarction, heart failure, pneumonia, and stroke) were abstracted at baseline (1998) and follow-up (2000-2001).Main Outcome MeasureFifteen quality indicators associated with improved outcomes in the prevention or treatment of the 5 clinical areas were used as quality of care measures. These 15 indicators were specifically targeted by the QIOs for quality improvement during the study period.ResultsHospitals that voluntarily participate with the QIOs are more likely to be larger than nonparticipating hospitals (P<.05). At baseline, there were statistically significant (P<.05) differences between participating and nonparticipating hospitals on 5 of 15 quality indicators, with participating hospitals performing better on 3 of 5. There was no statistically significant difference in change from baseline to follow-up between participating and nonparticipating hospitals on 14 of 15 quality indicators. The one exception was that participating hospitals improved more on the pneumonia immunization indicator than nonparticipating hospitals (P = .005).ConclusionHospitals that participate with the QIO program are not more likely to show improvement on quality indicators than hospitals that do not participate.

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