Biostats

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7 Terms

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Measures of Occurrence: Prevalence + Incidence 

  • Prevalence: the number of people who are “currently” experiencing an event or outcome at a specific time point (a snapshot in time)

    • Measures the ”burden of disease” in a population

  • Incidence: the number of people who experience a new event or outcome during a particular interval of time (leads to a rate)

    • Measures the risk of getting the disease or experiencing the event over a specific timeframe

    • Only calculated based on persons at risk of experiencing the event (i.e., biological males would not be included in denominator for pregnancy risk)


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Prevalence: 


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Incidence


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Incidence Rate


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