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Measure Hierarchy

NQMC enables users to view groups of measures within their organizational context. This presentation of measure relationships is called the Measure Hierarchy. The levels of the hierarchy captured at NQMC, where applicable, are Collection, Set, Subset, Composite, and Measure. For a given measure, the hierarchy may not include all of these levels.

  • A Collection is the highest possible level of the measure hierarchy. A Collection may contain one or more Sets, Subsets, Composites, and/or Individual Measures.
  • A Set is the second level of the hierarchy. A Set may include one or more Subsets, Composites, and/or Individual Measures.
  • A Subset is the third level of the hierarchy. A Subset may include one or more Composites, and/or Individual Measures.
  • A Composite is a measure with a score that is an aggregate of scores from other measures. A Composite may include one or more other Composites and/or Individual Measures. Composites may be comprised of component Measures that can or cannot be used on their own; this information is provided in the Description field of the Measure Summaries.
  • A Measure is the lowest level of the hierarchy and may belong to a Composite, Subset, Set, and/or Collection.

NQMC depicts the Collection level of the measure hierarchy in the By Organization browse. Users may click on the organization name and then the Collection title, and navigate to a search results page, where the remaining levels of the hierarchy are exposed in the Measure Hierarchy facet. Clicking on a measure's title in the result list will display the measure summary.

Send questions regarding Measure Hierarchy to info@qualitymeasures.ahrq.gov.


Page Last Reviewed or Updated: July 15, 2016