Lecture 5 Notes

Question 1

Incidence

Answer 1

Describes the rate of people with the development of a disease in a group over a period of time
- usually per year

Question 2

What is the formula for incidence?

Answer 2

(# of persons development of a disease) x (unit time)

Question 3

What is Madigans, 2015 definition of incidence?

Answer 3

The number of new cases reported in a population in a given period of time

Question 4

What is an example of incidence?

Answer 4

The incidence of chicken pox in first grade children was 10% a day at the height of the epidemic

Question 5

Prevalence

Answer 5

The total number of people who develop a disease at a specific point in time, regardless of when it first appeared

Question 6

What is the most frequently used measure in epidemiology?

Answer 6

Counting of the number of people with the disease

Question 7

What is the formula for prevalence?

Answer 7

(# of people with the disease) / (total number of people in the group)

Question 8

What is an example of prevalence?

Answer 8

Prevalence of diarrhea in the children’s camp on July 13th was 33%

Question 9

Morbidity

Answer 9

The incidence of illness (disease) in a population

- includes both fatal and non-fatal diseases

Question 10

What could morbidity refer to? (2)

Answer 10

1. Incidence

2. Prevalence

Question 11

What is an example of morbidity?

Answer 11

Morbidity rate genital chlamydia in Canada in 2000 was 32%

Question 12

Mortality rate

Answer 12

Incidence of death in a population

Question 13

What is the formula for mortality rate?

Answer 13

(# of people dead/total # in the group) x (unit of time)

Question 14

What is an example of mortality rate?

Answer 14

The mortality rate varied from 25%-33% of Europe’s population during plague epidemics in the middle ages

Question 15

Case fertility rate

Answer 15

The number of confirmed cases that died of the disease