Epidemiology Quiz

64 Questions | Total Attempts: 976

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Epidemiology Quizzes & Trivia

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. 
    • 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. 
    • 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. 
    • 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