Measuring Disease in Population Flashcards
0
Q
Define prevalence.
A
The amount of people who already have the disease in a set population, with no time period.
1
Q
Define incidence.
A
The rate at which new cases occur in a population during a specified period.
2
Q
Out of incidence and prevalence which one is a proportion and which one is a rate?
A
Incidence is a rate.
Prevalence is a proportion.
3
Q
How do you work out the incidence rate?
What are the units?
A
New events/(person x years)
=events per person years.
4
Q
How do you calculate prevalence?
A
Cases/population.
