This graph shows the percentage of patients who die before being discharged from the hospital they had their operation at. This is called the ‘in-hospital mortality rate’.
Some hospitals do more complicated surgery on patients who are more sick, whilst others do fairly routine surgery. So that we can make fair comparisons between these hospitals, the mortality rate has been ‘risk adjusted’ to take into account the difficulty of each operation.
The green line in the middle of the graph shows the average mortality rate for heart surgery in the UK. The blue dot shows the risk adjusted mortality rate for the hospital you are looking at. The lower the blue dot appears on the graph, the lower the percentage of patients who have died after surgery.
If the blue dot is underneath the yellow dashed line near the top of the graph, then the mortality rate shown by the blue dot is within the limits we would expect.
For more information on understanding mortality rates, look at the Understanding the graphs page
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