Epidemiology Practice Quiz: Trivia Exam!

63 Questions | Total Attempts: 1754

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Epidemiology Practice Quiz: Trivia Exam!

Epidemiology is the division of science that deals with specific patterns in health and diseases in delineated populations. It has developed methodology used in clinical research, public health studies, and study in the biological sciences. During this quiz, you will need to know the difference between mass screening and selective screening and the positive and negative predictive value. This challenging quiz is all about epidemiology. You can do it.


Questions and Answers
  • 1. 
    Mass Screening is
    • A. 

      The proportion of people screened positive by a test and actually have the disease, this is the + value

    • B. 

      The standards of care, anyone that could be at risk should be screend

    • C. 

      The screening of people who are at high risk of disease.

  • 2. 
    Selective screening is
    • A. 

      The standards of care, anyone that could be at risk should be screend

    • B. 

      This is the ability of a test to identify only those non diseased individuals who actually do not have the disease

    • C. 

      The screening of people who are at high risk of disease.

  • 3. 
    Describe sensitivity
    • A. 

      The ability of a test to correctly identify all individuals who have been screened and actually have the disease

    • B. 

      This is the ability of a test to identify only those non diseased individuals who actually do not have the disease

    • C. 

      The proportion of people screened positive by a test and actually have the disease, this is the + value

  • 4. 
    Describe specificity.
    • A. 

      The ability of a test to correctly identify all individuals who have been screened and actually have the disease

    • B. 

      This is the ability of a test to identify only those non diseased individuals who actually do not have the disease

    • C. 

      The proportion of people screened positive by a test and actually have the disease, this is the + value

  • 5. 
    The positive predictive value is
    • A. 

      The probability of those who have screened negative and actually do NOT have the disease tested for

    • B. 

      The proportion of people screened positive by a test and actually have the disease, this is the + value

  • 6. 
    The negative predictive value is
    • A. 

      The proportion of people screened positive by a test and actually have the disease, this is the + value

    • B. 

      The probability of those who have screened negative and actually do NOT have the disease tested for

  • 7. 
    The equation for Sensitivity is this: A/(A+C)
    • A. 

      True

    • B. 

      False

  • 8. 
    The equation for Specificity is 
    • A. 

      C/(B+D)

    • B. 

      D/(B+C)

    • C. 

      A/(B+D)

  • 9. 
    The definition of an agent is
    • A. 

      Is the person or animal that provides substinance for an infectious agent under natural conditions

    • B. 

      With the presence of, excessive presence, or lack of is essential for the occurance of a disease

    • C. 

      This is the domain in which disease-causing agents may exist, survive, or come from

  • 10. 
    Define a Host.
    • A. 

      With the presence of, excessive presence, or lack of is essential for the occurance of a disease

    • B. 

      This is the domain in which disease-causing agents may exist, survive, or come from

    • C. 

      Is the person or animal that provides substinance for an infectious agent under natural conditions

  • 11. 
    The third and last factor is Environment, what does this refer to
    • A. 

      Is the person or animal that provides substinance for an infectious agent under natural conditions

    • B. 

      With the presence of, excessive presence, or lack of is essential for the occurance of a disease

    • C. 

      This is the domain in which disease-causing agents may exist, survive, or come from

  • 12. 
    The epidemiological triangle consists of three components, which of these does not belong?
    • A. 

      Agent

    • B. 

      Host

    • C. 

      Resevoir

    • D. 

      Bacterium

    • E. 

      Environment

  • 13. 
    Define infectivity.
    • A. 

      This is the ability of an agent to enter and multiply in a susceptible host

    • B. 

      This is the degree to which an agent produces toxic substances

    • C. 

      The severity of the disease

  • 14. 
    What is virulence?
    • A. 

      This is the ability of an agent to enter and multiply in a susceptible host

    • B. 

      The severity of the disease

    • C. 

      This is the degree to which an agent produces toxic substances

  • 15. 
    Define Toxicity
    • A. 

      The severity of the disease

    • B. 

      This is the ability of an agent to enter and multiply in a susceptible host

    • C. 

      This is the degree to which an agent produces toxic substances

  • 16. 
    Define active immunity.
    • A. 

      Immunity gained from a person to person transaction

    • B. 

      The development of immunity from previous exposure to an agent before a vaccine or natural infection

    • C. 

      Resistance of the entire community because of the people immunity within the community

  • 17. 
    Define passive immunity.
    • A. 

      Acquired immunity from previous exposure to an agent before a vaccine or natural infection

    • B. 

      Resistance of the entire community because of the people immunity within the community

    • C. 

      Immunity gained from a person to person transaction

  • 18. 
    Herd immunity is...
    • A. 

      Immunity gained from a person to person transaction

    • B. 

      Acquired immunity from previous exposure to an agent before a vaccine or natural infection

    • C. 

      Resistance of the entire community because of the people immunity within the community

  • 19. 
    Passive immunity is the acquired immunity from natural infection.
    • A. 

      True

    • B. 

      False

  • 20. 
    Define incubation period.
    • A. 

      The doubling time of the agent and the communicability time between exposures

    • B. 

      When someone is infected but does not show any symptoms, this is like typhoid mary

    • C. 

      Time from when the agent first invaded and the first symptom

  • 21. 
    Subclinical illness is..
    • A. 

      When someone is infected but does not show any symptoms, this is like typhoid mary

    • B. 

      Time from when the agent first invaded and the first symptom

    • C. 

      The doubling time of the agent and the communicability time between exposures

  • 22. 
    Generation time is defined as?
    • A. 

      When someone is infected but does not show any symptoms, this is like typhoid mary

    • B. 

      The doubling time of the agent and the communicability time between exposures

    • C. 

      Time from when the agent first invaded and the first symptom

  • 23. 
    As they relate to environmental characteristics, what is the physical?
    • A. 

      Plants and animals that can act as reservoirs

    • B. 

      The environment that houses the agent

    • C. 

      Overcrowding usually due to economic issues

  • 24. 
    As it relates to environmental characteristics, what is climatologic?
    • A. 

      An environment where disease spreads the quickest

    • B. 

      Overcrowding usually due to economic issues

    • C. 

      Plants and animals that can act as reservoirs

  • 25. 
    Relating to environmental characteristics, biologic is 
    • A. 

      Overcrowding usually due to economic issues

    • B. 

      An environment where disease spreads the quickest

    • C. 

      Plants and animals that can act as reservoirs

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