2 The data set included data from 39 NPCR central cancer registries that met the United States Cancer Statistics (USCS) publication criteria for all years 2013 through 2019 and that conducted linkage with the National Death Index and/or active patient follow-up for all years 2013 through 2019. To learn more on this topic, visit Measures of Cancer Survival.Ĭancer incidence data submitted to CDC’s National Program of Cancer Registries (NPCR) in the 2022 data submission period were used to create a data set in SEER*Stat for this analysis. Thus, the relative cancer survival is calculated as the observed all-cause survival in a group of individuals with cancer divided by the expected all-cause survival of the general population. This is a reasonable approximation because cancer deaths are generally a negligible proportion of all deaths. 1 Because the expected survival of individuals who do not have cancer is difficult to obtain, it is often approximated by the expected all-cause survival of the general population. Relative cancer survival is defined as the ratio of the observed all-cause survival in a group of individuals with cancer to the expected all-cause survival of a similar group of individuals who do not have cancer. Relative cancer survival measures the proportion of people with cancer who will be alive at a certain time after diagnosis, given that they did not die from something other than their cancer during that period of time. 1 Definition and Calculation of Relative Cancer Survival Surveillance of cancer incidence and survival are essential in monitoring and understanding CDC’s efforts to support the needs of people who have cancer now or had cancer in the past, estimated to be 13 million in 2020.
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