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. Author manuscript; available in PMC: 2014 Oct 2.
Published in final edited form as: Med Care. 2013 Sep;51(9):832–837. doi: 10.1097/MLR.0b013e31829fa92a

Table 1. Proportion of Hospital-Level Variation in Mortality Rates Explained by Individual Quality Measures Included in the Composite.

Medical Condition Individual Quality Measures Proportion of Hospital-level Variation Explained (%)
Heart Failure (HF) Mortality 60
PNA mortality 42
Volume 23
AMI mortality 21
Related volume* 17
Number of beds 12
Acute Myocardial Infarction (AMI) Mortality 56
Volume 42
Related volume† 41
HF mortality 22
PNA mortality 22
Number of beds 17
Aspirin on Discharge 12
Aspirin on Arrival 11
Pneumonia (PNA) Mortality 70
HF mortality 36
AMI mortality 17
Related volume‡ 7
Volume 4

Note: The proportion of hospital-level variation explained does not sum to 100%because the variation explained by each component is not unique.

*

For HF, related conditions were coronary artery bypass grafting (CABG), aortic valve repair (AVR), percutaneous coronary interventions (PCI), mitral valve repair (MVR), AMI, and PNA.

†

For AMI, related conditions were AVR, CABG, PCI, MVR, and HF.

‡

For PNA, the related condition was HF.