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by: Aunjela Latham

Epidemiology Public health 2000

Aunjela Latham

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About this Document

the importance of rates
Intro to public health
Heather Harmon
Class Notes
Rates, Epidemiology
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This 3 page Class Notes was uploaded by Aunjela Latham on Wednesday September 7, 2016. The Class Notes belongs to Public health 2000 at Ohio University taught by Heather Harmon in Fall 2016. Since its upload, it has received 86 views.


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Date Created: 09/07/16
Public Health   Heather Harmon  9.6.16    Epidemiology​ : the study of  the distribution and determinants of health­related states or events  in human populations, and the application of this study to ​prevent and control ​health problems.    Epi­ upon  Demos­ people  Logos­ study    ­Sports related injuries  ­Recklessness  ­Hygiene  ­Accidents  ­Infectious disease transmission  ­Substance use  ­Disasters ( natural and man­made)  ­War and violence    Framingham heart study­Massachusetts : Followed a population­ generation after generation (  how we get heart disease) later found out there are a variety of reasons as to why people get heart  disease.    Epidemiology is concerned with finding associations and relationships.   ­The diagnostic discipline of public health   ­Major part of public health’s assessment function   ● An observational science  ­investigates causes of diseases  ­identifies trends in disease occurrence  ­Evaluates effectiveness of medical and public health interventions    John Snow: father of epidemiology  ­leader in introducing anesthesia and medical hygiene  ­1854 cholera outbreak in London’s Soho District  ­ “Miasma Theory”   ­Traced the source  ● Contaminated water dumped into River Thames  ­Broad Street water pump  Epidemiologist:  ­collect info about disease status:  ● Who,What,Where,When, and Why?  ­Data used to prevent outbreaks  ­Determine effectiveness of prevention support    ­Epidemiologic surveillance  ­Contact tracing   ­Immunization  ­Identify infected  ­Quarantine if necessary    Endemic­ persistent, usual , ​expected​ health­related state or event in a defined population over a  given period of time.    Epidemic­ Health related state or event in a defined population ​above the expected​ over a given  period of time.    Pandemic­ Epidemic affecting a large number of people, ​globally​, many countries,continents or  regions.    The Importance of Rates    Rates allow for comparison of outbreaks at different times or in a different places    Rates:​ number of events in a given population over a period of time or given point in time  ● Natality ( birth), Morbidity ( sickness), Mortality or fatality ( death rates)    Cases: ​  people afflicted ( those who are sick)    Attack Rates​: Percentage of people who get sick in a given population ( lung cancer ex)    Morbidity Rates​: Frequency at which a disease appears in a population.    Mortality Rates:​ the number of deaths in a given area or period, or from a particular cause.    Population at Risk:​ those susceptible to particular disease or condition.    Incidence Rate: number of NEW health related events or cases of a disease in a population at a  given time, divided by a total  


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