observed survival


Observed survival is the percentage of people with a particular cancer who are alive at a certain point in time after their diagnosis.

For example, a 5-year observed survival of 70% means that, on average, people have a 7 in 10 chance of being alive 5 years after their diagnosis.

Observed survival does not consider the cause of death, so the people who are not alive 5 years after diagnosis could have died from cancer or from another cause.