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Letters
October 26, 2005

Quality Improvement Organizations and Hospital Care

JAMA. 2005;294(16):2028-2030. doi:10.1001/jama.294.16.2028-a

To the Editor: In their study on quality improvement organizations (QIOs), Drs Snyder and Anderson1 conclude that improvement in hospital quality indicators is not attributable to QIO interventions because improvement at “intervention” hospitals was significantly greater than improvement at nonintervention hospitals on only 1 of 15 quality measures. However, 4 problems in the study design made finding significant differences unlikely, even if QIOs had been responsible for a large part of improvement over the past 7 years.

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