| The Hospital Mortality Index was created to allow examination of the overall performance of a hospital or municipality across several mortality indicators. The mortality indicators selected to create the Hospital Mortality Index were those indicators that successfully passed through three filters: sample size, size bias and sample coverage.
The mortality indicators included in the Hospital Mortality Index are:
- Hip Replacement Mortality
- Congestive Heart Failure Mortality
- Acute Stroke Mortality
- Acute Myocardial Infarction Mortality*
- Gastrointestinal Hemorrhage Mortality
- Hip Fracture Mortality
- Pneumonia Mortality
- Deaths among patients that are considered unlikely to die in the hospital
- Deaths among patients that developed specified complications of care during hospitalization
* Not included prior to 2002/03.
The final HMI index score is based on equal-weight components of the separate indicators listed above. For example, if an institution’s score on the 9 components contained in the HMI was: 76, 82, 64, 97, 89, 72, 91, 88, 90, then the HMI score would be:
76 + 82 + 64 + 97 + 89 + 72 + 91 + 88 + 90 = 83
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All institutions were then ranked based on their HMI score, where a rank of (1) corresponds to the highest score out of 100. |
