NRS 425 Exam 2 V1 | NRS 425 Health Promotion
and Population Health | Actual Q&A with Rationale
(NRS425 Exam 2) | Grand Canyon University
1. A community health nurse is conducting a windshield survey to evaluate the health of a
neighborhood. Which observations should the nurse document as social determinants of
health? (Select all that apply.)
A. Presence of sidewalks and bike paths
B. Availability of fresh produce in local grocery stores
C. Presence of abandoned buildings and broken windows
D. The age and race of the individuals walking on the street
E. Proximity of industrial plants to residential housing
F. The number of religious centers and community parks
Correct Answer: A, B, C, E, F
Explanation: Social determinants of health (SDOH) include the conditions in which people
are born, grow, live, work, and age. Sidewalks and parks relate to the physical environment,
while grocery store contents relate to food security. Industrial proximity and abandoned
buildings represent environmental hazards and neighborhood safety, which are key SDOH
factors. The demographic data (age/race) describes the population but is not considered a
determinant in the context of environmental observation.
,2. A nurse is implementing primary prevention strategies to address the incidence of lead
poisoning in a community. Which action should the nurse take?
A. Screening children for blood lead levels at a local health clinic.
B. Educating parents about the importance of removing lead-based paint from older
homes.
C. Providing chelation therapy to children with confirmed lead toxicity.
D. Referring families to a specialist for long-term cognitive assessment after exposure.
Correct Answer: B
Explanation: Primary prevention focuses on preventing the initial occurrence of a disease
or injury. Educating parents to remove lead-based paint eliminates the source of exposure
before the child is affected. Screening (A) is secondary prevention, while treatment (B) and
long-term management (D) are tertiary prevention.
3. According to the Epidemiological Triangle, which factor represents the environment?
A. Contaminated water supply in a rural village.
B. A person with a compromised immune system.
C. A virus causing a respiratory infection.
D. The genetic predisposition to developing type 2 diabetes.
Correct Answer: A
, Explanation: The Epidemiological Triangle consists of the agent, host, and environment.
The environment includes extrinsic factors that affect the agent and the opportunity for
exposure, such as a contaminated water supply. The virus is the agent, and the immune
system or genetics are host factors.
4. A public health nurse is reviewing the effectiveness of a new screening test for
tuberculosis. The nurse notes that the test correctly identifies 95% of individuals who actually
have the disease. This measurement represents which of the following?
A. Reliability
B. Specificity
C. Validity
D. Sensitivity
Correct Answer: D
Explanation: Sensitivity is the ability of a test to correctly identify those with the disease
(true positives). Specificity, on the other hand, is the ability to correctly identify those
without the disease (true negatives). Validity refers to the overall accuracy of the test in
measuring what it is supposed to measure.
5. In the context of population health, which of the following best defines ‘Prevalence Rate’?
A. The number of new cases of a disease occurring in a population during a specific time
period.
B. The proportion of deaths within a specific population due to a specific disease.
and Population Health | Actual Q&A with Rationale
(NRS425 Exam 2) | Grand Canyon University
1. A community health nurse is conducting a windshield survey to evaluate the health of a
neighborhood. Which observations should the nurse document as social determinants of
health? (Select all that apply.)
A. Presence of sidewalks and bike paths
B. Availability of fresh produce in local grocery stores
C. Presence of abandoned buildings and broken windows
D. The age and race of the individuals walking on the street
E. Proximity of industrial plants to residential housing
F. The number of religious centers and community parks
Correct Answer: A, B, C, E, F
Explanation: Social determinants of health (SDOH) include the conditions in which people
are born, grow, live, work, and age. Sidewalks and parks relate to the physical environment,
while grocery store contents relate to food security. Industrial proximity and abandoned
buildings represent environmental hazards and neighborhood safety, which are key SDOH
factors. The demographic data (age/race) describes the population but is not considered a
determinant in the context of environmental observation.
,2. A nurse is implementing primary prevention strategies to address the incidence of lead
poisoning in a community. Which action should the nurse take?
A. Screening children for blood lead levels at a local health clinic.
B. Educating parents about the importance of removing lead-based paint from older
homes.
C. Providing chelation therapy to children with confirmed lead toxicity.
D. Referring families to a specialist for long-term cognitive assessment after exposure.
Correct Answer: B
Explanation: Primary prevention focuses on preventing the initial occurrence of a disease
or injury. Educating parents to remove lead-based paint eliminates the source of exposure
before the child is affected. Screening (A) is secondary prevention, while treatment (B) and
long-term management (D) are tertiary prevention.
3. According to the Epidemiological Triangle, which factor represents the environment?
A. Contaminated water supply in a rural village.
B. A person with a compromised immune system.
C. A virus causing a respiratory infection.
D. The genetic predisposition to developing type 2 diabetes.
Correct Answer: A
, Explanation: The Epidemiological Triangle consists of the agent, host, and environment.
The environment includes extrinsic factors that affect the agent and the opportunity for
exposure, such as a contaminated water supply. The virus is the agent, and the immune
system or genetics are host factors.
4. A public health nurse is reviewing the effectiveness of a new screening test for
tuberculosis. The nurse notes that the test correctly identifies 95% of individuals who actually
have the disease. This measurement represents which of the following?
A. Reliability
B. Specificity
C. Validity
D. Sensitivity
Correct Answer: D
Explanation: Sensitivity is the ability of a test to correctly identify those with the disease
(true positives). Specificity, on the other hand, is the ability to correctly identify those
without the disease (true negatives). Validity refers to the overall accuracy of the test in
measuring what it is supposed to measure.
5. In the context of population health, which of the following best defines ‘Prevalence Rate’?
A. The number of new cases of a disease occurring in a population during a specific time
period.
B. The proportion of deaths within a specific population due to a specific disease.
