Epidemiology: Disease Detectives
Types of Studies
Observational Studies
Case-Control:
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Sujects with exposure and those without are compared to see “if there is an association between disease and exposure
Cohort Study:
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“subjects are enrolled on the basis of exposure (or lack of exposure) to a factor or on membership in a well-defined population”
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subjects are followed over time to determine how they will attain the disease.
Case-Control:
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Sujects with exposure and those without are compared to see “if there is an association between disease and exposure
Cohort Study:
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"subjects are enrolled on the basis of exposure (or lack of exposure) to a factor or on membership in a well-defined population”
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subjects are followed over time to determine how they will attain the disease
Experimental Studies
Community-based epidemiologic Study
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“instead of randomizing individuals, communities may be randomly selected to receive treatment”
Clinical (experimental) study:
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the person in charge of the specific study is able to control the exposure that is received
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tracks individuals over time to see the effects of exposure
Randomized Controlled Clinical Trial (RCT):
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"a prospective, analytical, experimental study using primary data generated in the clinical environement"
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gives the strongest evience
The video above gives an introduction to epidemiology study types. [Citation 41.9]
The video above explains case-control studies and cohort studies.[Citation 41.10]
The video below explains randomized-controlled trials. [Citation 41.11]