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 control of health problems. Epidemiologists help with study design, collection, and statistical analysis of data, amend interpretation and dissemination of results (including peer review and occasional systematic review). Epidemiology has helped develop methodology used in clinical research, public health studies, and, to a lesser extent, basic research in the biological sciences.
This are 2 type of the epidemiology :
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| (http://www.newhealthadvisor.com/Types-of-Epidemiological-Studies.html) |
In term of descriptive studies:
Person – age,
gender, ethnicity and risk taking behaviour
Place – climate,
geology and population density
Time – Age
(time since birth), seasonality and temporal trends
Epidemiology Triangle
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| (https://onlinecourses.science.psu.edu/stat507/node/25) |
Agent - microbe that causes the
disease such as biological (bacteria, virus, parasites), physical (radiation,
physical force), chemical (pollutants, drugs), nutrients (nutritional
deficiency).
Host - organism harbouring the
disease in terms of Age, race, sex, socioeconomic status, immunity, and behaviours
Environment - those external factors that cause or allow disease transmission.
Reference
*http://www.newhealthadvisor.com/Types-of-Epidemiological-Studies.html
*https://onlinecourses.science.psu.edu/stat507/node/25
*From my lecture's note named Encik Mohd Jamalil Azam
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