Creating Epidemiology, the difference between Prevalence and Incidence: Difference between revisions
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== Meaning of Epidemiology: == | == Meaning of Epidemiology: == | ||
Epidemiology is the study of the distribution and determinants of health related states or events. And the application of this study to the control of diseases and other health problems | Epidemiology is the study of the distribution and determinants of health related states or events. And the application of this study to the control of diseases and other health problems.<ref>epidemiology, health topics, <nowiki>http://www.who.int/topics/epidemiology/en/</nowiki> (accessed 28 August 2017)</ref> | ||
It studies the health of population groups within societies or countries. This information helps plan health programs to know how one country’s health compares with another, and many other things that are useful for all who work in a health setting. | |||
It studies the health of population groups within societies or countries. This information helps plan health programs to know how one country’s health compares with another, and many other things that are useful for all who work in a health setting.<ref name=":0">Linda Shields and Alison Twycross, the difference between incidence and prevalence, vol 15 no 7 September 2003.</ref> | |||
== Difference between Prevalence and Incidence: == | == Difference between Prevalence and Incidence: == | ||
Two of the most commonly used terms in epidemiology are prevalence and incidence, and they are often mixed up or used incorrectly. | Two of the most commonly used terms in epidemiology are prevalence and incidence, and they are often mixed up or used incorrectly.<ref name=":0" /> | ||
=== What is incidence? === | === What is incidence? === | ||
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<u>Example of incidence:</u> | <u>Example of incidence:</u> | ||
Auckland in New Zealand, often has epidemics of meningococcal disease, with annual incidences of up to 16.9/ 100,000 people. | |||
Auckland in New Zealand, often has epidemics of meningococcal disease, with annual incidences of up to 16.9/ 100,000 people.<ref name=":0" /> | |||
=== What is prevalence? === | === What is prevalence? === | ||
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<u>Example of prevalence:</u> | <u>Example of prevalence:</u> | ||
A recent Scottish study showed that the prevalence of obesity in a group of children aged from 3 to 4 years was 12.8% at the time. | A recent Scottish study showed that the prevalence of obesity in a group of children aged from 3 to 4 years was 12.8% at the time.<ref name=":0" /> | ||
== Reference: == | == Reference: == | ||
Revision as of 13:26, 28 August 2017
Meaning of Epidemiology:[edit | edit source]
Epidemiology is the study of the distribution and determinants of health related states or events. And the application of this study to the control of diseases and other health problems.[1]
It studies the health of population groups within societies or countries. This information helps plan health programs to know how one country’s health compares with another, and many other things that are useful for all who work in a health setting.[2]
Difference between Prevalence and Incidence:[edit | edit source]
Two of the most commonly used terms in epidemiology are prevalence and incidence, and they are often mixed up or used incorrectly.[2]
What is incidence?[edit | edit source]
It is the number of instances of illness commencing or of persons becoming ill (injured or dying or hurting) during a given period in a specified population. In other word, incidence usually means something that is measured within a set number of people and in a time period.
Example of incidence:
Auckland in New Zealand, often has epidemics of meningococcal disease, with annual incidences of up to 16.9/ 100,000 people.[2]
What is prevalence?[edit | edit source]
It gives a figure for a factor at a single point in time (samples of a study, rate of specific case in a hospital etc.) i.e. prevalence can tell us only what is happening at a certain point.
Example of prevalence:
A recent Scottish study showed that the prevalence of obesity in a group of children aged from 3 to 4 years was 12.8% at the time.[2]
