InterPreT has been developed to help health practitioners and epidemiologists understand the difference between complex statistics that are commonly reported on cancer survival.


The tool may also be used by patients who wish to obtain a clearer understanding on what these different cancer survival measures mean. A tool designed for patient use will be released in due course. The measures presented currently only reflect aggregated national level statistics in England. Patients' individual prognosis will differ in terms of other important disease characteristics, such as stage of cancer at diagnosis.


Patients can consult their physician for a more accurate picture on their own prognosis as the website does not claim or attempt to provide any medical or professional advice based on individual outcome.


Links to organisations that offer support and advice are available in the 'Support' section

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65 Yr Old Female Patient Diagnosed with Melanoma

Survival for Patients Years after Diagnosis
Net Survival
Expected Survival
All Cause Survival

Likely Cause of Death Years from Diagnosis

People Key:
People Key:

All Cause Survival

This is also known as “observed” survival where death can be from any cause, including the cancer itself. It gives the chance of being alive at different points in time after a cancer diagnosis.

For 100 male patients aged years old at diagnosis:

After 1 year: are likely to be alive and are likely not be alive.

After 5 years: are likely to be alive and are likely not be alive.

After 10 years: are likely to be alive and are likely not be alive.

Expected Survival

This gives the chance of being alive for people within the general population (who are assumed to free of cancer).

For 100 male patients aged years old at diagnosis:

After 1 year: are likely to be alive and are likely not be alive.

After 5 years: are likely to be alive and are likely not be alive.

After 10 years: are likely to be alive and are likely not be alive.

Net Survival

Net survival is difficult to interpret at the individual level. Looking at “crude probabilities” by switching from "Survival" to "Mortality" in the drop down menu in Graph Options" may be more relevant. However, for completeness we give an interpretation below.

Net survival gives the chance of dying from cancer if it was not possible to die of anything other than cancer.

For 100 male patients aged years old at diagnosis, if they could not die of other causes then:

After 1 year: are likely to be alive and are likely not be alive.

After 5 years: are likely to be alive and are likely not be alive.

After 10 years: are likely to be alive and are likely not be alive.

Crude Probability of Death

(Note: Switch to "Mortality" in the "I want probabilities in term of:" menu for crude probability graphical representiations)

Crude probabilities of death give the chance of being dead at different points in time after a diagnosis of cancer. For those diagnosed with the cancer, it gives the chance of dying from cancer and the chance of dying from other causes. Combining these give the chance of dying from any cause.

For 100 male patients aged years old:

After 1 year: are likely to be alive and are likely not be alive, of which are because of cancer and because of other causes.

After 5 years: are likely to be alive and are likely not be alive, of which are because of cancer and because of other causes.

After 10 years: are likely to be alive and are likely not be alive, of which are because of cancer and because of other causes.



For a more technical background on these cancer survival measures, visit the "Methodology" page.

Survival Measure 1 Year 5 Years 10 Years
All Cause Survival
Expected Survival
Net Survival
Mortality Measure 1 Year 5 Years 10 Years
CPD due to All Causes
CPD due to Other Causes
CPD due to Cancer

Graph Options

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I want probabilities in terms of:

Age: 65 yrs

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