Measures Of Occurence

Question 1

Define incidence proportion

Answer 1

The proportion of people who develop a disease during a specified period

Question 2

Define incidence rate

Answer 2

Measures how quickly people are developing a disease

Question 3

Define prevalence

Answer 3

The proportion of a defined population who have a disease at a given point in time

Question 4

How do you calculate incidence proportion?

Answer 4

Number of people who develop a disease in a specified period/number of people at risk of developing disease at the start of a period

Question 5

How do you calculate incidence rate?

Answer 5

Number of people who develop a disease at a specified period/number of person years at risk of developing a disease in a specified time period

Question 6

How do you calculate prevalence?

Answer 6

Number of people with a disease at a given point in time/total number of people in the population at that given time