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What is incidence?
•
Incidence:
number of
new
cases arising in a given
time period in a specified population. Collected
routinely by cancer registries.
•
Distinguish from
prevalence
: number of persons
in a specified population who have been
diagnosed with a disease, and who are
still alive
on a particular date
, eg cancer survivors
•
Incidence rate
: eg number of cases diagnosed per
100,000 persons per year.
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