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Epidemiology and Biostatistics NSG 522 Newest Exam
Preparation With Complete Questions And Correct
Answers With Rationales Already Graded A+Brand
New Version!!
Question 1
A nurse is using epidemiology to study the opioid crisis in her
community. Which of the following activities best represents the core
epidemiological function of "surveillance"?
A) Implementing a new community-based naloxone distribution
program.
B) Analyzing data from emergency room visits to track opioid overdose
trends over the last five years.
C) Interviewing patients in a rehab facility to understand their personal
history with addiction.
D) Lobbying local government to pass a law limiting the prescription of
opioids.
Answer: B
Explanation: Surveillance involves the systematic and ongoing
collection, analysis, and interpretation of health data. Tracking ER visit
trends is a classic example of passive surveillance. The other options
represent field investigations (C), evaluation (A), and policy (D).
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Question 2
The key feature that distinguishes epidemiology from other clinical
sciences is its primary focus on:
A) The cellular mechanisms of disease.
B) The treatment of individual patients.
C) Populations and population health.
D) The development of new pharmaceutical drugs.
Answer: C
Explanation: Epidemiology is concerned with the distribution and
determinants of health-related states in specified populations, not the
direct care of individuals.
Question 3
A researcher is conducting a study to determine if a new low-sodium
diet causes a reduction in blood pressure. This type of study is known
as:
A) Descriptive Epidemiology
B) Analytic Epidemiology
C) Surveillance Epidemiology
D) Community Outreach
Answer: B
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Explanation: Analytic epidemiology focuses on the "why" and "how" by
examining the determinants (causes) of health outcomes. Descriptive
epidemiology would focus on the "who, what, where, and when."
Question 4
Which of the following best describes the "distribution" of a health-
related event?
A) The physical, biological, and social factors that cause the disease.
B) The application of study findings to control health problems.
C) The systematic approach to observing health events.
D) The frequency and pattern of events in terms of person, place, and
time.
Answer: D
Explanation: Distribution refers to the analysis of who is getting sick
(person), where they are getting sick (place), and when (time).
Question 5
The core epidemiological functions include all of the following EXCEPT:
A) Field investigations
B) Linkages
C) Evaluation
D) Direct patient care
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Answer: D
Explanation: The core functions are surveillance, field investigations,
analytic studies, evaluation, and linkages. Direct clinical care is not an
epidemiological function; it is the domain of clinical medicine.
Question 6
A nurse epidemiologist is asked to determine the number of new cases
of HIV diagnosed in a county during 2025. This measure is called:
A) Prevalence
B) Incidence
C) Morbidity rate
D) Attack rate
Answer: B
Explanation: Incidence measures the number of new events (cases)
occurring in a defined population during a specified time period.
Prevalence counts all existing cases, both new and old.
Question 7
If the prevalence of diabetes in a community is 15% and the incidence
rate is 5 per 1,000 person-years, which of the following is most likely
true?
A) The duration of diabetes is relatively short.
B) The case-fatality rate is extremely high.
Epidemiology and Biostatistics NSG 522 Newest Exam
Preparation With Complete Questions And Correct
Answers With Rationales Already Graded A+Brand
New Version!!
Question 1
A nurse is using epidemiology to study the opioid crisis in her
community. Which of the following activities best represents the core
epidemiological function of "surveillance"?
A) Implementing a new community-based naloxone distribution
program.
B) Analyzing data from emergency room visits to track opioid overdose
trends over the last five years.
C) Interviewing patients in a rehab facility to understand their personal
history with addiction.
D) Lobbying local government to pass a law limiting the prescription of
opioids.
Answer: B
Explanation: Surveillance involves the systematic and ongoing
collection, analysis, and interpretation of health data. Tracking ER visit
trends is a classic example of passive surveillance. The other options
represent field investigations (C), evaluation (A), and policy (D).
,2|Page
Question 2
The key feature that distinguishes epidemiology from other clinical
sciences is its primary focus on:
A) The cellular mechanisms of disease.
B) The treatment of individual patients.
C) Populations and population health.
D) The development of new pharmaceutical drugs.
Answer: C
Explanation: Epidemiology is concerned with the distribution and
determinants of health-related states in specified populations, not the
direct care of individuals.
Question 3
A researcher is conducting a study to determine if a new low-sodium
diet causes a reduction in blood pressure. This type of study is known
as:
A) Descriptive Epidemiology
B) Analytic Epidemiology
C) Surveillance Epidemiology
D) Community Outreach
Answer: B
,3|Page
Explanation: Analytic epidemiology focuses on the "why" and "how" by
examining the determinants (causes) of health outcomes. Descriptive
epidemiology would focus on the "who, what, where, and when."
Question 4
Which of the following best describes the "distribution" of a health-
related event?
A) The physical, biological, and social factors that cause the disease.
B) The application of study findings to control health problems.
C) The systematic approach to observing health events.
D) The frequency and pattern of events in terms of person, place, and
time.
Answer: D
Explanation: Distribution refers to the analysis of who is getting sick
(person), where they are getting sick (place), and when (time).
Question 5
The core epidemiological functions include all of the following EXCEPT:
A) Field investigations
B) Linkages
C) Evaluation
D) Direct patient care
, 4|Page
Answer: D
Explanation: The core functions are surveillance, field investigations,
analytic studies, evaluation, and linkages. Direct clinical care is not an
epidemiological function; it is the domain of clinical medicine.
Question 6
A nurse epidemiologist is asked to determine the number of new cases
of HIV diagnosed in a county during 2025. This measure is called:
A) Prevalence
B) Incidence
C) Morbidity rate
D) Attack rate
Answer: B
Explanation: Incidence measures the number of new events (cases)
occurring in a defined population during a specified time period.
Prevalence counts all existing cases, both new and old.
Question 7
If the prevalence of diabetes in a community is 15% and the incidence
rate is 5 per 1,000 person-years, which of the following is most likely
true?
A) The duration of diabetes is relatively short.
B) The case-fatality rate is extremely high.
