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Understanding OSCaR Data
The brochure, Understanding OSCaR Data, explains current methods used in the data analysis of Cancer in Oregon.
In analyzing Oregon's cancer data, we looked at various measures commonly used in epidemiologic studies of cancer.
- One measure is the incidence rate, which provides information on the frequency with which cases are occurring in the population over time. Another measure is the mortality rate, which is the rate of deaths due to cancer in the Oregon population.
- Annual crude incidence rates are calculated as the total number of newly diagnosed cases divided by the overall population of Oregon.
- Age-adjusted rates are calculated to allow comparisons between two different populations (i.e., Oregon and the U.S.) whose age distributions differ.
- As a measure of disease severity and/or prognosis, we include the mortality-to-incidence (M/I) ratio. Under conditions of stable rates, the M/I ratio may be considered as the chance of eventually dying from a specific cancer (at current cure rates). Values closer to 0 indicate a good prognosis; values closer to 1 indicate a poor prognosis.
Mortality and Incidence Queriable Databases
For more information, please contact:
oscar.ohd@state.or.us
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