Epidemiology Test Bank Exam
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1. Epidemiology is best defined as:
A. The study of individual patient outcomes
B. The diagnosis and treatment of disease
C. The study of the distribution and determinants of
health-related states in populations
D. The prevention of infectious disease only
Bold italic rationale: Epidemiology focuses on
population-level patterns, causes, and effects of health
and disease.
2. Which term refers to the number of new cases of a
disease over a specific period?
A. Prevalence
B. Incidence
C. Mortality
D. Risk
Bold italic rationale: Incidence measures new cases
, occurring in a defined population during a specified
time.
3. Prevalence is best described as:
A. Number of new cases in a year
B. Total number of existing cases at a given time
C. Number of deaths due to disease
D. Risk of exposure
Bold italic rationale: Prevalence includes both new and
pre-existing cases at a specific point or period.
4. Which epidemiologic measure is most useful for
studying chronic diseases?
A. Incidence
B. Prevalence
C. Attack rate
D. Mortality
Bold italic rationale: Chronic diseases persist over time,
making prevalence more informative.
5. The epidemiologic triad includes agent, host, and:
A. Vector
B. Environment
C. Reservoir
D. Transmission
Bold italic rationale: Disease occurs due to interactions
between agent, host, and environment.
6. A disease constantly present at a low level in a
population is called:
, A. Epidemic
B. Endemic
C. Pandemic
D. Sporadic
Bold italic rationale: Endemic diseases maintain a
steady presence within a geographic area.
7. A sudden increase in disease cases above expected
levels is known as:
A. Endemic
B. Epidemic
C. Pandemic
D. Cluster
Bold italic rationale: Epidemics exceed normal
expectancy in a population.
8. Which study design follows participants forward in time?
A. Case-control
B. Cohort
C. Cross-sectional
D. Ecological
Bold italic rationale: Cohort studies track exposure to
outcome over time.
9. Which study design compares individuals with a disease
to those without?
A. Case-control
B. Cohort
C. Experimental
Newest With Complete
Questions And Correct
Detailed Answers| Brand New
Version!2026 2027
1. Epidemiology is best defined as:
A. The study of individual patient outcomes
B. The diagnosis and treatment of disease
C. The study of the distribution and determinants of
health-related states in populations
D. The prevention of infectious disease only
Bold italic rationale: Epidemiology focuses on
population-level patterns, causes, and effects of health
and disease.
2. Which term refers to the number of new cases of a
disease over a specific period?
A. Prevalence
B. Incidence
C. Mortality
D. Risk
Bold italic rationale: Incidence measures new cases
, occurring in a defined population during a specified
time.
3. Prevalence is best described as:
A. Number of new cases in a year
B. Total number of existing cases at a given time
C. Number of deaths due to disease
D. Risk of exposure
Bold italic rationale: Prevalence includes both new and
pre-existing cases at a specific point or period.
4. Which epidemiologic measure is most useful for
studying chronic diseases?
A. Incidence
B. Prevalence
C. Attack rate
D. Mortality
Bold italic rationale: Chronic diseases persist over time,
making prevalence more informative.
5. The epidemiologic triad includes agent, host, and:
A. Vector
B. Environment
C. Reservoir
D. Transmission
Bold italic rationale: Disease occurs due to interactions
between agent, host, and environment.
6. A disease constantly present at a low level in a
population is called:
, A. Epidemic
B. Endemic
C. Pandemic
D. Sporadic
Bold italic rationale: Endemic diseases maintain a
steady presence within a geographic area.
7. A sudden increase in disease cases above expected
levels is known as:
A. Endemic
B. Epidemic
C. Pandemic
D. Cluster
Bold italic rationale: Epidemics exceed normal
expectancy in a population.
8. Which study design follows participants forward in time?
A. Case-control
B. Cohort
C. Cross-sectional
D. Ecological
Bold italic rationale: Cohort studies track exposure to
outcome over time.
9. Which study design compares individuals with a disease
to those without?
A. Case-control
B. Cohort
C. Experimental
