C228 -WGU Community Health Final
Exam Questions and All Actual
Answers 2025-2026 Updated.
Epidemiology is a primary tool used by the nurse scientist for researching which of the following
topics?
a. Locations where family violence is increasing
b. Contributing factors to childhood obesity
c. Morbidity statistics
d. Population characteristics for healthy older adults - Answer B
When doing which of the following activities does the community health nurse (CHN) act in the
role of a nurse epidemiologist?
a. Eliciting the health history of a client presenting with an illness
b. Performing a physical assessment of an ill client
c. Providing treatment and health education to a client with a disease
d. Evaluating the number of clients presenting with similar diseases - Answer D
During the years 2005 to 2010, in a particular district, 1,000 of 10,000 girls aged 16 to 18 years
tested positive for a sexually transmitted infection (STI). Of the 1,000 diagnosed STIs, 300 were
gonorrhea and 500 were Chlamydia. Which one of the following statements would the CHN
recognize as being true?
a. The proportion of cases of gonorrhea to all STIs was 300:1300.
b. The proportion of cases of gonorrhea to Chlamydia was 300:500.
c. The proportion of STIs to the total population was 10 per 1,000.
d. The proportion of cases of gonorrhea to all STIs was 50%. - Answer C
Which model best explains the reasons why homeless individuals are at increased risk of
disease as a result of multiple agent, host, and environmental factors?
a. The web of causality
b. The epidemiological triangle
c. The levels of prevention
d. The Health Promotion Model - Answer A
Through which of the following actions would the CHN who wishes to decrease the incidence of
obesity in elementary school children provide secondary prevention?
a. Giving a presentation on the importance of exercise and physical fitness
,b. Designing a game in which students need to make healthy food choices
c. Weighing students to identify those who are overweight
d. Putting students on a diet if they weigh more than 20% of their ideal weight - Answer C
Which of the following is a CHN implementing when advising a client with osteoporosis to have
three servings of milk or dairy products daily?
a. Primary prevention
b. Secondary prevention
c. Tertiary prevention
d. Treatment, but not prevention - Answer C
Which one of the following would be the best choice for the nurse researcher who wishes to
identify the long-term benefits and risks of a treatment for hyperlipidemia?
a. A cross-sectional study
b. An ecological study
c. A clinical trial
d. A retrospective analysis - Answer C
Of the following actions proposed by a CHN to prevent problems related to coronary artery
disease (CAD) in a region with a high prevalence, which one is most likely to have positive
outcomes?
a. Introducing heart health information in the curriculum as early as grade 1, presentations on
diet and exercise for the community at large, and special education sessions for high-risk
populations
b. Providing online activities related to the prevention of cardiac disease, smoking cessation
programs, and blood pressure screenings
c. Distributing handouts about age-appropriate games, self-assessments, and educational
materials on heart-healthy lifestyles, availability of community screenings for hyperlipidemia in
persons age 35 years and older, and walking programs for those affected by CAD
d. Enrolling clients with CAD into cardiac rehabilitation programs, routinely evaluating the
effectiveness of CAD treatment regimens, and p - Answer C
People with immune deficiencies may have a negative tuberculosis (TB) skin test (Mantoux),
even though they are infected. Which of the following measurements will the CHN conclude to
be low when the TB skin test is given to persons with acquired immune deficiency syndrome
(AIDS)?
a. Positive predictive value
b. Reliability
c. Sensitivity
, d. Specificity - Answer C
To find out about substance abuse among students in a local high school, a teacher
recommends to the CHN that questionnaires be given to students during various school
programs, but the CHN rejects this method. Which situation does the CHN think the teacher's
recommendation would create?
a. Classification bias
b. Confounding bias
c. Personal bias
d. Selection bias - Answer D
The CHN can enhance the sensitivity and specificity of a test by using its predictive value. Which
one of the following best defines positive predictive value?
a. The proportion of persons with a negative test who are actually disease-free
b. The variation inherent in the trait being measured
c. Any inconsistency in the testing instrument
d. The proportion of persons with a positive test who actually have the disease - Answer D
A CHN determines that out of 8,000 women screened for breast cancer, 35 have previously
been diagnosed with a cancer event and 20 are newly diagnosed with a cancer event. What is
the prevalence rate in this group?
a. 55
b. 0.7
c. 70%
d. 55/8,000 - Answer D
The CHN knows that a regular-sized blood pressure (BP) cuff will provide readings that are
falsely high if used to measure BP in an obese person and will provide readings that are falsely
low if used to measure BP in a small or very thin person. Which of the following does a regular-
sized BP cuff lack when used to measure BP in all individuals?
a. Reliability
b. Sensitivity
c. Specificity
d. Validity - Answer D
Women who develop vaginal fungal infections (commonly referred to as yeast infections)
usually have a history of having been prescribed antibiotics for bacterial infections. Which
component of the epidemiological triangle (agent-host-environment) contributes most to the
development of vaginal infections?
Exam Questions and All Actual
Answers 2025-2026 Updated.
Epidemiology is a primary tool used by the nurse scientist for researching which of the following
topics?
a. Locations where family violence is increasing
b. Contributing factors to childhood obesity
c. Morbidity statistics
d. Population characteristics for healthy older adults - Answer B
When doing which of the following activities does the community health nurse (CHN) act in the
role of a nurse epidemiologist?
a. Eliciting the health history of a client presenting with an illness
b. Performing a physical assessment of an ill client
c. Providing treatment and health education to a client with a disease
d. Evaluating the number of clients presenting with similar diseases - Answer D
During the years 2005 to 2010, in a particular district, 1,000 of 10,000 girls aged 16 to 18 years
tested positive for a sexually transmitted infection (STI). Of the 1,000 diagnosed STIs, 300 were
gonorrhea and 500 were Chlamydia. Which one of the following statements would the CHN
recognize as being true?
a. The proportion of cases of gonorrhea to all STIs was 300:1300.
b. The proportion of cases of gonorrhea to Chlamydia was 300:500.
c. The proportion of STIs to the total population was 10 per 1,000.
d. The proportion of cases of gonorrhea to all STIs was 50%. - Answer C
Which model best explains the reasons why homeless individuals are at increased risk of
disease as a result of multiple agent, host, and environmental factors?
a. The web of causality
b. The epidemiological triangle
c. The levels of prevention
d. The Health Promotion Model - Answer A
Through which of the following actions would the CHN who wishes to decrease the incidence of
obesity in elementary school children provide secondary prevention?
a. Giving a presentation on the importance of exercise and physical fitness
,b. Designing a game in which students need to make healthy food choices
c. Weighing students to identify those who are overweight
d. Putting students on a diet if they weigh more than 20% of their ideal weight - Answer C
Which of the following is a CHN implementing when advising a client with osteoporosis to have
three servings of milk or dairy products daily?
a. Primary prevention
b. Secondary prevention
c. Tertiary prevention
d. Treatment, but not prevention - Answer C
Which one of the following would be the best choice for the nurse researcher who wishes to
identify the long-term benefits and risks of a treatment for hyperlipidemia?
a. A cross-sectional study
b. An ecological study
c. A clinical trial
d. A retrospective analysis - Answer C
Of the following actions proposed by a CHN to prevent problems related to coronary artery
disease (CAD) in a region with a high prevalence, which one is most likely to have positive
outcomes?
a. Introducing heart health information in the curriculum as early as grade 1, presentations on
diet and exercise for the community at large, and special education sessions for high-risk
populations
b. Providing online activities related to the prevention of cardiac disease, smoking cessation
programs, and blood pressure screenings
c. Distributing handouts about age-appropriate games, self-assessments, and educational
materials on heart-healthy lifestyles, availability of community screenings for hyperlipidemia in
persons age 35 years and older, and walking programs for those affected by CAD
d. Enrolling clients with CAD into cardiac rehabilitation programs, routinely evaluating the
effectiveness of CAD treatment regimens, and p - Answer C
People with immune deficiencies may have a negative tuberculosis (TB) skin test (Mantoux),
even though they are infected. Which of the following measurements will the CHN conclude to
be low when the TB skin test is given to persons with acquired immune deficiency syndrome
(AIDS)?
a. Positive predictive value
b. Reliability
c. Sensitivity
, d. Specificity - Answer C
To find out about substance abuse among students in a local high school, a teacher
recommends to the CHN that questionnaires be given to students during various school
programs, but the CHN rejects this method. Which situation does the CHN think the teacher's
recommendation would create?
a. Classification bias
b. Confounding bias
c. Personal bias
d. Selection bias - Answer D
The CHN can enhance the sensitivity and specificity of a test by using its predictive value. Which
one of the following best defines positive predictive value?
a. The proportion of persons with a negative test who are actually disease-free
b. The variation inherent in the trait being measured
c. Any inconsistency in the testing instrument
d. The proportion of persons with a positive test who actually have the disease - Answer D
A CHN determines that out of 8,000 women screened for breast cancer, 35 have previously
been diagnosed with a cancer event and 20 are newly diagnosed with a cancer event. What is
the prevalence rate in this group?
a. 55
b. 0.7
c. 70%
d. 55/8,000 - Answer D
The CHN knows that a regular-sized blood pressure (BP) cuff will provide readings that are
falsely high if used to measure BP in an obese person and will provide readings that are falsely
low if used to measure BP in a small or very thin person. Which of the following does a regular-
sized BP cuff lack when used to measure BP in all individuals?
a. Reliability
b. Sensitivity
c. Specificity
d. Validity - Answer D
Women who develop vaginal fungal infections (commonly referred to as yeast infections)
usually have a history of having been prescribed antibiotics for bacterial infections. Which
component of the epidemiological triangle (agent-host-environment) contributes most to the
development of vaginal infections?
