What is epidemiology?
Epidemiology is the study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to the control of health problems.
What is a case definition?
A case definition is a set of standard criteria ...
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What is epidemiology? - correct answer Epidemiology is the study of the
distribution and determinants of health-related states or events in specified
populations, and the application of this study to the control of health problems.
What is a case definition? - correct answer A case definition is a set of standard
criteria for classifying whether a person has a particular disease, syndrome, or
other health condition
Describe the difference between descriptive and analytic epidemiology - correct
answer Descriptive epidemiology provides a way of organizing and analyzing
data on health and disease in order to understand variations in disease frequency
geographically and over time and how disease varies among people based on a
host of personal characteristics (person, place, and time).
Analytic epidemiologic studies measure the association between a particular
exposure and a disease, using information collected from individuals, rather than
from the aggregate population.
What is a cohort study? - correct answer In a cohort study the epidemiologist
records whether each study participant is exposed or not, and then tracks the
participants to see if they develop the disease of interest
What is a case-control study? - correct answer In a case-control study,
investigators start by enrolling a group of people with disease (at CDC such
persons are called case-patients rather than cases, because case refers to
occurrence of disease, not a person). As a comparison group, the
investigator then enrolls a group of people without disease (controls).
Investigators then compare previous exposures between the two groups.
What is a cross-sectional study? - correct answer A sample of persons from a
population is enrolled and their exposures and health outcomes are measured
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