Indicate BOTH the type of mathematical parameter and the type of measure of disease frequency: a....
Indicate BOTH the type of mathematical parameter and the type of measure of disease frequency:
a. There were 6 new cases of melanoma per 100,000 residents in NYC during 2007
b. In a study, 4.3 new cases of cancer per 100,000 person-months were noted.
Homework Answers
a. The cumulative incidence of melanoma per 100,000 residents in NYC during 2007 is 6 cases, There are maybe old cases of melanoma but in 2007 there are 6 new cases found. so, the measure os disease is the cumulative incidence.
b.Person-time means, we are counting the amount of time the person was in risk. it is used to calculate the incidence rate.
as an example, we are following 10 people for a year and 2 people got sick in 2 months, so, they can tribute 2 months to the denominator.
The incidence rate of cancer per 100,000 person-month is 4.3
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