Mortality in intensive care units
One of the CH-IQI quality indicators is mortality data, which the Swiss Federal Office of Public Health (FOPH) publishes together with other performance indicators in its quality report. Hirslanden collected its mortality rate data using the same method and consolidated these for the Hirslanden Private Hospital Group as a whole and for each hospital individually.
Hirslanden also carries out a risk-adjusted measurement of mortality in the intensive care unit at all hospitals with a corresponding infrastructure. For several years, results have shown that the Hirslanden hospitals achieve significantly better figures compared to the Swiss average when comparing the effective and expected mortality.
Risk adjustment – in other words, the consideration of patient-specific risk factors such as age or concomitant illnesses – is relevant when measuring mortality in the intensive care unit. The instrument used here is the Simplified Acute Physiology Score (SAPS). The medical condition of each patient is recorded using SAPS and its different parameters in order to calculate their mortality risk. The sum of all mortality risks calculated in this way constitutes the “expected mortality”. Setting this in relation to the “effective mortality” gives the “mortality index”. A sign of high-quality treatment is when the effective mortality is at most half as high as the expected mortality, with a correspondingly low mortality index.
Mortality in the ICU,
|Expected mortality (SAPS)
|Effective mortality (all patients staying in ICU)
|Effective mortality (died in ICU)
|Mean age of patients in the ICU
|Mean duration of stay in the ICU (days)
|Severity of the case (mean SAPS)
|Percentage ventilated patients
|Number of cases