Ratios
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Questions and Answers

Which one of these is a type of ratio frequently used in public health?

  • Cause-of-death rate
  • Incidence
  • Crude rate (correct)
  • Prevalence

    • What does the specific mortality rate measure?

  • The occurrence of a specific cause of death in a population
  • The occurrence of deaths in a specific population subgroup (correct)
  • The occurrence of events over a given interval of time relative to the total person-time of exposure/at risk
  • The occurrence of births in a specific population subgroup

    • What does the general fertility rate measure?

  • The occurrence of births in a specific population subgroup (correct)
  • The occurrence of a specific cause of death in a population
  • The occurrence of deaths in a specific population subgroup
  • The occurrence of events over a given interval of time relative to the total person-time of exposure/at risk

    • What does the incidence measure?

    <p>The occurrence of events over a given interval of time relative to the total person-time of exposure/at risk</p> Signup and view all the answers

    What does the prevalence measure?

    <p>The occurrence of events over a given interval of time relative to the total person-time of exposure/at risk</p> Signup and view all the answers

    Study Notes

    Biostatistics and Epidemiology Ratios, Proportion, and Rates

    • Ratios are expressions of one measure relative to another, frequently used in public health.
    • Proportion is a type of ratio that relates a part to a whole.
    • Rate refers to the occurrence of events over a given interval of time relative to the total person-time of exposure/at risk.
    • Pulse rate is an example of a rate, measured as beats per minute.
    • Glomerular filtration rate is another example of a rate, measured as mL/min/1.73 m2.
    • There are three types of rates: crude rates, specific rates, and adjusted (standardized) rates.
    • Crude rates use the total population as the denominator.
    • Specific rates use population subgroups as the denominator.
    • Adjusted rates are constructed to permit comparison between groups that differ in some important characteristics.
    • Fertility, mortality, and morbidity are key indicators used in epidemiology.
    • Fertility indicators include crude birth rate and general fertility rate.
    • Morbidity indicators include incidence and prevalence. Mortality indicators include crude death rate, specific mortality rate, cause-of-death rate, and infant mortality rate.

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    Description

    Test your knowledge of ratios, proportions, and rates in biostatistics and epidemiology with this quiz. Learn about the different types of ratios commonly used in public health and understand how proportions and rates are calculated.

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