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EPIDEMIOLOGY MCQ EXAM QUESTIONS WITH CORRECT ANSWERS
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EPIDEMIOLOGY MCQ EXAM QUESTIONS WITH CORRECT ANSWERS
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EPIDEMIOLOGY MCQ EXAMQUESTIONS WITH CORRECT ANSWERS
Which of the following measure(s) is/are able to capture the reality of a dynamic
population? Select all that apply.
a) Risk.
b) Rate.
c) Prevalence.
d) Odds. - ANSWER-c
What is the primary difference between risk and prevalence?
a) Risk describes the number of diseased persons present in the population divided by
the number of persons in the population during a specified time period, whereas
prevalence describes the number of newly diseased person present in the population in
a specified time period divided by the number of at- risk persons in the population.
b) Prevalence describes the number of diseased persons present in the population
divided by the number of persons in the population at a specified time point, whereas
risk describes the number of newly diseased person present in the population divided
by the number of at-risk persons in the population in a specified time period.
c) Prevalence describes the number of diseased person present in the population at a
specified time point whereas risk describes the number of people who die from the
disease in the population in a spec - ANSWER-b
Which of the following statements about descriptive and analytic epidemiology
is TRUE?
a) Analytic epidemiology focuses on characterizing the time, individuals and places
affected by disease.
b) Descriptive epidemiology studies the interactions between the host, the agent and
the environment to determine the causes and consequences of disease.
c) Cross-sectional surveys can be used to conduct both descriptive and analytic
research studies.
d) John Snow removing the pump handle to test the hypothesis that the water pump
was causing the 1854 Broad Street cholera outbreak is an example of descriptive
epidemiology.
e) The case-series report of children who received an MMR vaccine and were
diagnosed with autism is an example of analytic epidemiology. - ANSWER-c
Which of the following is NOT an objective of epidemiology?
a) Determine the frequency and distribution of disease in a population
b) Identify the causes and risk factors for disease
c) Evaluate the efficacy of preventative and therapeutic measures
d) Provide a foundation for guiding public policy decisions
e) Deliver health care to individuals with disease - ANSWER-e
, A new treatment is developed for heart failure in dogs that prevents death, but does not
produce recovery from disease. Which of the following would we expect to see if we
conducted a descriptive study after the treatment was introduced?
a) Prevalence will increase.
b) Incidence will increase.
c) There will be no change in prevalence or incidence.
d) Prevalence will decrease.
e) Incidence will decrease. - ANSWER-c
A study was conducted to determine if cats that are fed dry food diets are more likely to
develop diabetes than cats that are fed canned food diets. In this study, the researchers
took a group of cats with confirmed diabetes and compared them to a group of cats
without diabetes. The owners were asked a series of questions about their cat's diet.
Which of the following measures of association should we calculate?
a) Prevalence risk ratio
b) Incidence risk ratio
c) Odds ratio
d) Incidence rate ratio - ANSWER-c
A prospective cohort study was used to investigate the effect of lysine dietary
supplements on the risk of shelter cats developing an upper respiratory infection (URI).
The incidence of upper respiratory infections in cats fed lysine was 0.85 times less than
for cats that did not receive lysine supplementation (95% CI: 0.54 to 1.64). Which of the
following statements is TRUE?
a) There is no significant association between feeding lysine and an upper respiratory
infection in cats.
b) Feeding lysine protects against upper respiratory infections in cats.
c) The incidence risk ratio is not an appropriate measure of association for
cohort studies.
d) Feeding lysine is associated with an increased risk of upper respiratory
infection.
e) A cross-sectional survey would provide stronger evidence of a causal
relationship between lysine supplementation and upper respiratory infection. -
ANSWER-a
Which of the following statements about research study design is FALSE?
a) Case-control studies are good for studying rare diseases.
b) A cross-sectional survey can be used to measure the incidence of
disease.
c) Case reports cannot establish a causal relationship because there is no
group for comparison.
d) Randomised controlled trials can be used to study multiple disease
outcomes.
e) Cohort studies may be biased if subjects are lost to follow-up. - ANSWER-b
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