Flashcards in Intro to Epidemiology Deck (11):
Definition of Epidemiology
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 does epidemiology deal with?
Deals with the investigation of diseases, productivity, and welfare in animal populations
What does epidemiology describe?
the frequency of occurrence of these health-related states/events and how diseases, productivity and welfare are affected by different factors (or determinants)
What is the goal of epidemiology?
to reduce the frequency of disease occurrence, enhance productivity and improve animal welfare
What are the characteristics of descriptive epidemiology?
Characteristics, amount, and distribution of disease in specified populations
What are the characteristics of analytical epidemiology?
Determine if there is an association between an exposure and outcome in a population and how strong the association is
Ultimate goal is to determine if an exposure factor causes the disease
an identifiable relationship between an exposure and an outcome
when one quantity changes nothing happens to the other
Implies that there is a true mechanism that leads from the exposure to the disease
Consists of an external agent, a susceptible host, and an environment that brings the two together
Disease results from the interaction between agent and the susceptible host in an environment that supports transmission of the agent from a source to that host