This group tracks the number of deaths, cases, how long people survive after diagnosis, behaviors that persuade the risk of cancer development and screening test usage. Incidence rate is used to trace the number of new cancers of a specific place which occurs in a certain population annually.  It is conveyed as the number of cancers per hundred thousand populations at risk.  To get the cancer incidence rate of a specified site, new cancer is considered as the numerator having the size of the population as the denominator. Various primary cancers present in one patient are included in getting the number of new cancers. 

Another term that is also very important in getting cancer statistics is cancer mortality rate.  A cancer mortality rate is the number of deaths primarily caused by cancer occurring in a certain population annually.  Cancer mortality is conveyed as the number of deaths because of cancer per hundred thousand populations.  The formula is Mortality rate = (cancer deaths / population) multiplied by 100,000.  The number of deaths caused by cancer is the numerator of the mortality rate while the size of the population is the denominator.

The percentage or number of people alive in a specified date in a population is called prevalence.  Prevalence only includes people who were diagnosed previously with cancer.  The result presented by prevalence is very useful especially in allocating resources, health planning and most of all could be used as an estimate of cancer survivorship.

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