1
, d. These rates are used to measure disease occurrence and make comparisons
between population groups. They are commonly used measures that help our
understanding of the distribution of disease in a given population.
3. Understand why incidence data are important for measuring risk.
a. Incidence is important for measuring risk because it tells you the rate at which
new people are contracting the disease
4. Define, compare, calculate, and interpret Measures of Mortality
a. Mortality: a measure of the frequency of occurrence of death in a defined
population during a specified interval. Morbidity and mortality measures are
often the same mathematically; it's just a matter of what you choose to
measure, illness or death.
i. Calculation: Deaths occurring during a given time periodDIVIDED BY Size
of the population among which the deaths occurred TIMES 10n
b. Cause-specific mortality rate: The mortality rate from a specified cause for a
population.
i. Calculation: The number of deaths attributed to a specific cause DIVIDED
BY The size of the population at the midpoint of the time period
c. Annual mortality rate: The rate of death in a one-year period.
i. Calculation: Deaths occurring within the one-year period DIVIDED BY Size
of population in which the deaths occured
d. Case-fatality: the proportion of deaths within a designated population of "cases"
(people with a medical condition) over the course of the disease
, d. These rates are used to measure disease occurrence and make comparisons
between population groups. They are commonly used measures that help our
understanding of the distribution of disease in a given population.
3. Understand why incidence data are important for measuring risk.
a. Incidence is important for measuring risk because it tells you the rate at which
new people are contracting the disease
4. Define, compare, calculate, and interpret Measures of Mortality
a. Mortality: a measure of the frequency of occurrence of death in a defined
population during a specified interval. Morbidity and mortality measures are
often the same mathematically; it's just a matter of what you choose to
measure, illness or death.
i. Calculation: Deaths occurring during a given time periodDIVIDED BY Size
of the population among which the deaths occurred TIMES 10n
b. Cause-specific mortality rate: The mortality rate from a specified cause for a
population.
i. Calculation: The number of deaths attributed to a specific cause DIVIDED
BY The size of the population at the midpoint of the time period
c. Annual mortality rate: The rate of death in a one-year period.
i. Calculation: Deaths occurring within the one-year period DIVIDED BY Size
of population in which the deaths occured
d. Case-fatality: the proportion of deaths within a designated population of "cases"
(people with a medical condition) over the course of the disease
