NUR 521 Exam 4 Blueprint Practice Actual Exam
2026/2027 | Questions and Answers with Detailed
Rationales | Pass Guaranteed – A+ Graded
Section 1: Epidemiology & Population Health
Q1: A community health nurse is reviewing vital statistics for a county. Over the past
year, 45 new cases of Type 2 diabetes were diagnosed in a population of 15,000 adults.
Previously, 320 adults in this population were living with the diagnosis. Which measure
best describes the 45 new cases?
A. Point prevalence
B. Period prevalence
C. Incidence [CORRECT]
D. Lifetime morbidity rate
Correct Answer: C
Rationale: The best answer is C. Incidence captures the number of new cases occurring
in a population over a specified time period, which is exactly what the 45 new diagnoses
represent. Prevalence would include all existing cases, not just the new ones.
Q2: A screening program for cervical cancer reports that 92% of women who truly have
the disease test positive. Which characteristic of the screening test does this describe?
A. Specificity
B. Positive predictive value
C. Sensitivity [CORRECT]
D. Negative predictive value
Correct Answer: C
Rationale: The best answer is C. Sensitivity refers to the proportion of people with the
disease who test positive, so a 92% detection rate among true cases reflects strong
sensitivity. What you'll want to remember from the Exam 4 blueprint is that sensitivity
identifies the "sick" correctly.
,Q3: During a community health assessment, the nurse identifies that residents in one
neighborhood have limited access to grocery stores with fresh produce, higher rates of
unemployment, and inadequate public transportation. These factors are best
categorized as:
A. Biological determinants
B. Social determinants of health [CORRECT]
C. Behavioral risk factors
D. Genetic predispositions
Correct Answer: B
Rationale: The best answer is B. These community-level conditions—food access,
employment, and transportation—are classic social determinants of health that shape
population outcomes beyond individual behavior or biology.
Q4: A researcher wants to study whether long-term exposure to air pollution causes
lung cancer. Participants are enrolled before disease onset and followed for 20 years.
This study design is best described as:
A. Case-control study
B. Cross-sectional study
C. Cohort study [CORRECT]
D. Randomized controlled trial
Correct Answer: C
Rationale: The best answer is C. A cohort study follows exposed and unexposed groups
forward in time to compare disease incidence, which fits this long-term prospective
design perfectly.
Q5: A factory reports that 2,000 workers exposed to a chemical had 80 cases of a rare
skin condition over 10 years, while 4,000 unexposed workers had 40 cases. A safety
manager claims the chemical is safe because the absolute number of cases is the
same in both groups. Which interpretation is correct?
A. The manager is correct because 80 cases equal 40 cases when adjusted for group
size.
B. The exposed workers have four times the risk, as the incidence rate is 4% versus 1%.
[CORRECT]
C. The data are insufficient because the study was not randomized.
D. The chemical is safe because the disease is rare in both groups.
Correct Answer: B
, Rationale: The best answer is B. The incidence in exposed workers (80/2000 = 4%) is
four times that of unexposed workers (40/4000 = 1%), giving a relative risk of 4.0. What
you'll want to remember from the Exam 4 blueprint is that absolute numbers can be
misleading without considering the denominator population size.
Q6: A new rapid strep test is evaluated in 500 school-age children. The results are
shown below:
Table
Test Result Disease Present Disease Absent
Positive 90 30
Negative 10 370
What is the specificity of this screening test?
A. 75%
B. 90%
C. 92.5% [CORRECT]
D. 95%
Correct Answer: C
Rationale: The best answer is C. Specificity is the proportion of people without the
disease who test negative, calculated as 370 true negatives divided by 400 total
disease-free children, which equals 92.5%.
Q7: A county health department is conducting a community health assessment to guide
resource allocation. Which data collection method would provide the most
comprehensive picture of the community's health status, including both health
outcomes and the social and environmental factors influencing them?
A. Review of hospital admission records only
B. Analysis of national mortality trends
C. A systematic community health assessment using multiple data sources [CORRECT]
2026/2027 | Questions and Answers with Detailed
Rationales | Pass Guaranteed – A+ Graded
Section 1: Epidemiology & Population Health
Q1: A community health nurse is reviewing vital statistics for a county. Over the past
year, 45 new cases of Type 2 diabetes were diagnosed in a population of 15,000 adults.
Previously, 320 adults in this population were living with the diagnosis. Which measure
best describes the 45 new cases?
A. Point prevalence
B. Period prevalence
C. Incidence [CORRECT]
D. Lifetime morbidity rate
Correct Answer: C
Rationale: The best answer is C. Incidence captures the number of new cases occurring
in a population over a specified time period, which is exactly what the 45 new diagnoses
represent. Prevalence would include all existing cases, not just the new ones.
Q2: A screening program for cervical cancer reports that 92% of women who truly have
the disease test positive. Which characteristic of the screening test does this describe?
A. Specificity
B. Positive predictive value
C. Sensitivity [CORRECT]
D. Negative predictive value
Correct Answer: C
Rationale: The best answer is C. Sensitivity refers to the proportion of people with the
disease who test positive, so a 92% detection rate among true cases reflects strong
sensitivity. What you'll want to remember from the Exam 4 blueprint is that sensitivity
identifies the "sick" correctly.
,Q3: During a community health assessment, the nurse identifies that residents in one
neighborhood have limited access to grocery stores with fresh produce, higher rates of
unemployment, and inadequate public transportation. These factors are best
categorized as:
A. Biological determinants
B. Social determinants of health [CORRECT]
C. Behavioral risk factors
D. Genetic predispositions
Correct Answer: B
Rationale: The best answer is B. These community-level conditions—food access,
employment, and transportation—are classic social determinants of health that shape
population outcomes beyond individual behavior or biology.
Q4: A researcher wants to study whether long-term exposure to air pollution causes
lung cancer. Participants are enrolled before disease onset and followed for 20 years.
This study design is best described as:
A. Case-control study
B. Cross-sectional study
C. Cohort study [CORRECT]
D. Randomized controlled trial
Correct Answer: C
Rationale: The best answer is C. A cohort study follows exposed and unexposed groups
forward in time to compare disease incidence, which fits this long-term prospective
design perfectly.
Q5: A factory reports that 2,000 workers exposed to a chemical had 80 cases of a rare
skin condition over 10 years, while 4,000 unexposed workers had 40 cases. A safety
manager claims the chemical is safe because the absolute number of cases is the
same in both groups. Which interpretation is correct?
A. The manager is correct because 80 cases equal 40 cases when adjusted for group
size.
B. The exposed workers have four times the risk, as the incidence rate is 4% versus 1%.
[CORRECT]
C. The data are insufficient because the study was not randomized.
D. The chemical is safe because the disease is rare in both groups.
Correct Answer: B
, Rationale: The best answer is B. The incidence in exposed workers (80/2000 = 4%) is
four times that of unexposed workers (40/4000 = 1%), giving a relative risk of 4.0. What
you'll want to remember from the Exam 4 blueprint is that absolute numbers can be
misleading without considering the denominator population size.
Q6: A new rapid strep test is evaluated in 500 school-age children. The results are
shown below:
Table
Test Result Disease Present Disease Absent
Positive 90 30
Negative 10 370
What is the specificity of this screening test?
A. 75%
B. 90%
C. 92.5% [CORRECT]
D. 95%
Correct Answer: C
Rationale: The best answer is C. Specificity is the proportion of people without the
disease who test negative, calculated as 370 true negatives divided by 400 total
disease-free children, which equals 92.5%.
Q7: A county health department is conducting a community health assessment to guide
resource allocation. Which data collection method would provide the most
comprehensive picture of the community's health status, including both health
outcomes and the social and environmental factors influencing them?
A. Review of hospital admission records only
B. Analysis of national mortality trends
C. A systematic community health assessment using multiple data sources [CORRECT]
