Measuring Outbreak Rates Flashcards
Crude Morbidity Rate
with disease/ # in community
Cause-Specific Morbidity Rate for “disease”
with disease/# in community
Cause-Specific Mortality Rate
deaths from disease/ # in community
Case-Fatality Rate for disease
deaths from disease/ # in community with disease
Cause-Specific Survival Rate
cases alive/ # people affected
Live Birth Rate
live birth/ 1000 people in community
Fertility Rate
live births/ 1,000 women childbearing age.
Neonatal Mortality Rate
deaths of neonates/ 1,000 live births
Postnatal Mortality Rate
deaths postnatal/1,000 live births
Infant Mortality Rate
deaths
Maternal Mortality Rate
female deaths related to pregnancy/ 100,000 live births
Proportional Mortality Ratio
deaths from disease/ total # deaths in community
Infectivity
pts infected / # pt at risk for organism
Pathogenicity
pts with clinical disease from organism / # pt infected with organism
Virulence
# deaths from organism / # pts infected with organism. Similar to case-fatality rate.
How do Case-Fatality Rate, Cause-Specific Mortality Rate, and Proportional Mortality Ratio differ from one another?
Case-Fatality Rate:includes all case disease.
Cause-Specific Mortality Rate: people in community.
Proportional Mortality Ratio: all deaths.
Incident Rate
of new disease cases/ person-time at risk for disease
Point Prevalence
of existing cases/ # population
Only the population at risk contributes to the denominator of incidence or cumulative incidence.
True
When calculating the incidence rate of a disease, it’s necessary to follow all subjects the same length of time.
False, just note length of time person was followed.
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.?
False
Crude Mortality Rate
deaths/ # person in community
