2023 NR 503 Final Study Guide (Version-2), Final Exam
NR 503 Population Health, Epidemiology & Statistical
Principles, Chamberlain.
1. Objectivesof
... [Show More] epidemiology
a. Understand the aetiologyor cause of adisease (risk factors)
b. Find outthe extentthat a disease or health problemaffects a community or
population
c. Determine the natural history orprognosis
d. Evaluateexisting and newlydevelopedpreventativetherapeuticmeasures and
modes of healthcare delivery
2. Define, compare, calculate, and interpret Measures ofMorbidity
a. Incidence rate: measurement ofthe number of new individuals who contract a
disease during a particular period of time
i. Calculation:Number of new cases of disease orinjury during specified
period DIVIDED BY Size of population at start of period
b. Attack rate: Same asrisk,proportion ofindividualsin apopulation (initially freeof
disease) who develop the disease within a specified time interval.
i. Calculation: Totalnumber of new casesDIVIDEDBY The total population
c. Prevalence: measurement of all individuals affected by the disease at aparticular
time
i. Calculation:Number of new cases of disease orinjury during specified
period DIVIDED BY Time each person was observed, totaled for all
persons
d. These rates are used to measure disease occurrence and make comparisons
between population groups. They are commonlyusedmeasuresthat help our
understanding of the distribution of disease in a given population.
3. Understand why incidence data are importantformeasuring risk.
a. Incidence isimportantformeasuring risk because ittells you the rate at which
new people are contracting the disease
4. Define, compare, calculate, andinterpret Measures ofMortality
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 samemathematically; it'sjust amatter of what you choose tomeasure,
illness or death.
i. Calculation:Deaths occurring during a given time period DIVIDED BY Size
of the population amongwhich the deaths occurred TIMES 10n
b. Cause-specific mortality rate: Themortality rate froma specified cause for a
population.
i. Calculation: The number of deaths attributed to a specific cause DIVIDED
BY The size ofthe population at the midpoin [Show Less]