Lecture 49 - Frequency Measurements

Question 1

what are the two types of incidence

Answer 1

1. cumulative
2. incidence rate

Question 2

what are the two types of prevalence

Answer 2

1. point (at given point in time)
2. period (over given period)

Question 3

prevalence equation

Answer 3

of cases w/ disease / (# of cases w/o / # of cases w)

Question 4

what factors affect the prevalence

Answer 4

1. disease occurrence
2. amount of time

Question 5

incidence is a good measure for

Answer 5

cases prevalent for a short period of time with a lower incidence

Question 6

prevalence is a good measure for

Answer 6

cases with higher incidence that are chronic

Question 7

Cumulative incidence equation

Answer 7

CI = # of new cases / # individuals at risk

Question 8

Incidence rate equation

Answer 8

IR = # of new cases / individuals at risk * time