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Stomach cancer

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Survival statistics for stomach cancer

Survival statistics for stomach cancer are very general estimates and must be interpreted very carefully. Because these statistics are based on the experience of groups of people, they cannot be used to predict a particular person’s chances of survival.

There are many different ways to measure and report cancer survival statistics. Your doctor can explain the statistics for stomach cancer and what they mean to you.

Relative survival

Relative survival looks at how likely people with cancer are to survive after their diagnosis compared to people in the general population who do not have cancer but who share similar characteristics (such as age and sex).

In Canada, a 5-year relative survival statistic is reported for stomach cancer. The 5-year relative survival for stomach cancer is 25%. This means that, on average, people diagnosed with stomach cancer are 25% as likely to live 5 years after their diagnosis as people in the general population.

Survival by stage

Survival varies with each stage of stomach cancer. The following factors can also affect survival for stomach cancer.

  • Stomach cancer is aggressive.
  • Generally, the earlier stomach cancer is diagnosed and treated, the better the outcome.
  • Often stomach cancer is not found until it is at an advanced stage, which can make it more difficult to treat.
  • There are some effective treatments available for stomach cancer.

There are no specific Canadian statistics available for the different stages of stomach cancer. The following information comes from a variety of sources and may include statistics from other countries.

Stomach cancer survival
Stage5-year observed survival

IA

71%

IB

57%

IIA

46%

IIB

33%

IIIA

20%

IIIB

14%

IIIC

9%

IV

4%

Questions about survival

People with cancer should talk to their doctor about their prognosis. Prognosis depends on many factors, including:

  • your medical history
  • type of cancer
  • stage
  • characteristics of the cancer
  • treatments chosen
  • your response to treatment

Only a doctor familiar with these factors can put all of this information together with survival statistics to arrive at a prognosis.

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