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PHRD554 Public Health MCQ Questions with 100% Correct Answers | Verified | Latest Update 2024
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PHRD554 Public Health MCQ Questions with 100% Correct Answers | Verified | Latest Update 2024
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PHRD554 Public Health MCQA case-control study is characterized by all of the following except:
a. It is relatively inexpensive compared with most other epidemiologic study designs
b. Patients with the disease (cases) are compared with persons without the disease (controls)
c. Incidence rates may be computed directly
d. Assessment of past exposure may be biased
e. Definition of cases may be difficult--c. Incidence rates may be computed directly
A disease vector is a(n) ____________________ .
a) organism that transmits a disease
b) symptom of a disease
c) environmental condition associated with a disease--a) organism that transmits a disease
A new curative therapy for disease X is introduced which results in a decrease in the average
duration of the illness. Will the incidence of this disease increase, decrease or stay the same?
a. Increase
b. Decrease
c. Stay the same--c. Stay the same
A STD screening test is found to have a predictive value of 35% in a population with a disease
prevalence of 3 per 1000 individuals. If the same test is applied to a population with a disease
prevalence of 10 per 1000, the predictive value of a positive test will:
a. Either increase or decrease
b. Decrease
c. Remain unchanged
d. Increase--d. Increase
About what fraction of the people in the world have chronic diseases that are vector-borne?
a) 1/4
b) 1/2
c) 3/4--b) 1/2
All of the following are important criteria when making causal inferences except:
a. Temporal order of cause
b. Dose-response relationship
c. Consistency of association in several studies
d. Strength of association
e. Kappa coefficient--e. Kappa coefficient
, An epidemic that becomes unusually widespread and even global in its reach is referred to as a
__________ .
a) pandemic
b) hyperendemic
c) Spanish flu--a) pandemic
Counseling a diabetic patient to increase her level of exercise.--Tertiary
Diseases that are always present in a community, usually at a low, more or less constant, frequency
are classified as having an ____________ pattern.
a) epidemic
b) endemic
c) pandemic--b) endemic
Diseases that are due mostly to environmental changes, increased population densities, and pollution
that result from modernization in third world nations are referred to as:
a) diseases of poverty
b) diseases of development
c) schistosomiasis--b) diseases of development
Ecologic fallacy refers to:
a. Assessing exposure in large groups rather than in many small groups
b. Assessing outcome in large groups rather than in many small groups
c. Ascribing the characteristics of a group to every individual in that group
d. Examining correlations of exposure and outcomes rather than time trends
e. Failure to examine temporal relationships between exposures and outcomes--c. Ascribing the
characteristics of a group to every individual in that group
Endemic means that a disease
a. Occurs clearly in excess of normal expectancy
b. Is habitually present in human populations
c. Affects a large number of countries simultaneously
d. Exhibits a seasonal pattern
e. Is prevalent among animals--b. Is habitually present in human populations
Epidemiologists are interested in learning about ____________________ .
a) the causes of diseases and how to cure or control them
b) the frequency and geographic distribution of diseases
c) the causal relationships between diseases
d) all of the above--d) all of the above
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