12-18 Flashcards
What is epidemiology?
population medicine
What are epidemiologists concerned with?
course of disease in a population
What can data collected by epidemiologists be used for?
to prevent disease outbreaks or determine effectiveness of prevention efforts
Morbidity
rate at which illness occurs within a population
Mortality
death rate
Incidence
number of new health-related events or cases of a disease in a population exposed to that risk during a particular period of time, divided by total # in same population
Prevalence
number of new and old cases in a given period of time, divided by total # in that population
Acute
3 months or less
Chronic
3 months or longer
Incidence and Prevalence rates are expressed as….
crude or specific
Descritptive Epidemiological Study
respect to person, place and time
Analytical Epidemiological Study
aimed at testing hypothesis, relationship between variables
Define the Who of Descriptive Studies
case count followed by who is ill (man, woman, child, etc)
Define the When of Descriptive Studies
time of onset for each case, epidemic curve created
Define the Where of Desciptive Studies
determine residential address and travel history