Measuring Outbreak Rates

Question 1

Crude Morbidity Rate

Answer 1

with disease/ # in community

Question 2

Cause-Specific Morbidity Rate for “disease”

Answer 2

with disease/# in community

Question 3

Cause-Specific Mortality Rate

Answer 3

deaths from disease/ # in community

Question 4

Case-Fatality Rate for disease

Answer 4

deaths from disease/ # in community with disease

Question 5

Cause-Specific Survival Rate

Answer 5

cases alive/ # people affected

Question 6

Live Birth Rate

Answer 6

live birth/ 1000 people in community

Question 7

Fertility Rate

Answer 7

live births/ 1,000 women childbearing age.

Question 8

Neonatal Mortality Rate

Answer 8

deaths of neonates/ 1,000 live births

Question 9

Postnatal Mortality Rate

Answer 9

deaths postnatal/1,000 live births

Question 10

Infant Mortality Rate

Answer 10

deaths

Question 11

Maternal Mortality Rate

Answer 11

female deaths related to pregnancy/ 100,000 live births

Question 12

Proportional Mortality Ratio

Answer 12

deaths from disease/ total # deaths in community

Question 13

Infectivity

Answer 13

pts infected / # pt at risk for organism

Question 14

Pathogenicity

Answer 14

pts with clinical disease from organism / # pt infected with organism

Question 15

Virulence

Answer 15

# deaths from organism / # pts infected with organism.
Similar to case-fatality rate.

Question 16

How do Case-Fatality Rate, Cause-Specific Mortality Rate, and Proportional Mortality Ratio differ from one another?

Answer 16

Case-Fatality Rate:includes all case disease.
Cause-Specific Mortality Rate: people in community.
Proportional Mortality Ratio: all deaths.

Question 17

Incident Rate

Answer 17

of new disease cases/ person-time at risk for disease

Question 18

Point Prevalence

Answer 18

of existing cases/ # population

Question 19

Only the population at risk contributes to the denominator of incidence or cumulative incidence.

Answer 19

True

Question 20

When calculating the incidence rate of a disease, it’s necessary to follow all subjects the same length of time.

Answer 20

False, just note length of time person was followed.

Question 21

If the incidence rate of a serious disease 75/100,00 person-years and the prevalence is 25/100,000. The average duration of this disease is likely 3 years.?

Answer 21

False

Question 22

Crude Mortality Rate

Answer 22

deaths/ # person in community