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This web site provides estimates and projections of cancer prevalence for all 50 U.S. states and the District of Columbia (D.C.), based on a statistical method that uses state-specific mortality data and cancer survival. The prevalence statistics presented are prevalence counts, prevalence percents and age-adjusted prevalence percents. For an overview of methods and definitions refer to http://surveillance.cancer.gov/software/prevalence.html.

Cancer prevalence represents persons alive at a given date who were previously diagnosed with cancer. Incidence differs from prevalence in that it represents new cancer cases diagnosed during a given period of time, usually a year.

Complete Prevalence includes all people alive diagnosed with cancer regardless of how long ago the diagnosis was and represents cancer survivorship.

5-year Limited Duration Prevalence (also known as 5-year prevalence) includes people alive diagnosed with cancer within the past 5 years. It is a closer assessment of cancer patients’ prevalence in more intensive cancer care.

Prevalence Counts - number of people alive in a given date previously diagnosed with cancer.

Crude Prevalence Percent - percent of the population alive and previously diagnosed with cancer.

Age-Adjusted Prevalence Percent – A weighted average of the age-specific prevalence percent, where the weights are the proportions of persons in the corresponding age groups of a standard million population

Method of estimation and data sources:
Calculation of cancer prevalence requires several years of incidence data and accurate vital status information at end of follow-up. For more information please visit method of estimation and data sources.
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