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What Do Mortality Categories Show?

These categories show how hospitals' risk-adjusted 30-Day Death (mortality) rates compare to the rate across the U.S., after making adjustments for how sick patients were before they were admitted to the hospital and taking into account differences in death rates that might be due to chance.

Hospitals are shown to be Better or Worse Than U.S. National Rate only if we can be 95% certain that the difference between their risk-adjusted death (mortality) rates and the U.S. National rate is not due to chance. All others are shown in the No Different Than U.S. National Rate category.

Better Than U.S. National Rate

Hospitals in the Better Than U.S. National Rate category have risk-adjusted 30-day death (mortality) rates that are lower than the U.S. National rate, and we can be 95% certain that this difference is not due to chance.

No Different than U.S. National Rate

Many hospitals in the No Different Than U.S. National Rate category have risk-adjusted 30-day death (mortality) rates that are about the same as the U.S. National rate. Other hospitals in this category have rates that are higher or lower than the U.S. National rate, but we cannot be 95% certain that these differences are not due to chance. One cannot be certain about differences when a hospital has very few relevant patients.

Worse Than U.S. National Rate

Hospitals in the Worse Than U.S. National Rate category have risk-adjusted 30-day death (mortality) rates that are higher than the U.S. National rate, and we can be 95% certain that this difference is not due to chance.

(www.hospitalcompare.hhs.gov/Hospital/Static/GlossaryPopUp.asp)

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847-437-5500
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