The problem with composite indicators
Increasing emphasis by policy-makers on patient choice, public accountability and quality assurance has stimulated interest in the measurement of healthcare quality and safety. A popular approach involves use of composite indicators that combine information on individual measures of care quality into single scores. Intended to simplify complex information, composite indicators are now widely used, but they are often both problematic and controversial. This article, outlines six common problems associated with composite indicators and suggest possible mitigation strategies.
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