WGU E224 Global and Population Health Exam 3 - Questions
with Correct Answers (Verified Update)
50 questions
1. A nurse completing E224 clinical hours runs a blood pressure screening at a food bank and
refers people with high readings to a free clinic. Which levels of prevention and intervention are
used?
A. Primary prevention only
B. Tertiary prevention only
C. Secondary prevention through screening, plus referral and follow-up
D. No prevention
Correct Answer: C. Secondary prevention through screening, plus referral and follow-up
Rationale: Screening detects existing hypertension; referral links people to treatment.
2. A nurse teaches older adults in a senior center about fall prevention and home safety. This is:
A. Secondary prevention
B. Tertiary prevention
C. Disaster response
D. Primary prevention
Correct Answer: D. Primary prevention
Rationale: It prevents falls before they occur.
3. A support group for breast cancer survivors that helps manage lymphedema is:
A. Primary prevention
B. Secondary prevention
C. Tertiary prevention
D. Surveillance
Correct Answer: C. Tertiary prevention
Rationale: It reduces complications of an existing condition.
4. A county has 150,000 residents. In one year, 300 new cases of chlamydia are reported. The
incidence rate per 100,000 is:
A. 300
B. 50
C. 2,000
D. 200
Correct Answer: D. 200
Rationale: ,000 x 100,000 = 200.
5. A town of 8,000 people has 160 people currently living with asthma. The prevalence is:
A. 0.2%
B. 16%
C. 2%
D. 5%
Correct Answer: C. 2%
Rationale: ,000 = 0.02.
, 6. Of 400 people with a disease, 20 died. The case fatality rate is:
A. 20%
B. 2%
C. 0.5%
D. 5%
Correct Answer: D. 5%
Rationale: = 0.05.
7. At a banquet, 80 people ate chicken and 40 became ill; 60 did not eat chicken and 6 became ill.
The attack rate among those who ate chicken is:
A. 10%
B. 40%
C. 33%
D. 50%
Correct Answer: D. 50%
Rationale: = 0.50 (versus = 10% among non-eaters).
8. Using the banquet data above, the relative risk of illness for eating chicken is:
A. 0.5
B. 5.0
C. 10
D. 4.0
Correct Answer: B. 5.0
Rationale: 0..10 = 5.
9. In a case-control study: 40 cases were exposed and 60 were not; 20 controls were exposed
and 80 were not. The odds ratio is:
A. 2.0
B. 2.67
C. 0.375
D. 1.5
Correct Answer: B. 2.67
Rationale: (40 x 80) / (60 x 20) = 3,,200, about 2.67.
10. A community has 2,500 live births and 15 infant deaths in one year. The infant mortality rate
is:
A. 6 per 1,000 live births
B. 15 per 1,000
C. 0.6 per 1,000
D. 60 per 1,000
Correct Answer: A. 6 per 1,000 live births
Rationale: ,500 x 1,000 = 6.
11. A country records 30 maternal deaths among 50,000 live births. The maternal mortality ratio
is:
A. 60 per 100,000 live births
B. 30 per 100,000
C. 6 per 100,000
D. 600 per 100,000
Correct Answer: A. 60 per 100,000 live births
Rationale: ,000 x 100,000 = 60.
with Correct Answers (Verified Update)
50 questions
1. A nurse completing E224 clinical hours runs a blood pressure screening at a food bank and
refers people with high readings to a free clinic. Which levels of prevention and intervention are
used?
A. Primary prevention only
B. Tertiary prevention only
C. Secondary prevention through screening, plus referral and follow-up
D. No prevention
Correct Answer: C. Secondary prevention through screening, plus referral and follow-up
Rationale: Screening detects existing hypertension; referral links people to treatment.
2. A nurse teaches older adults in a senior center about fall prevention and home safety. This is:
A. Secondary prevention
B. Tertiary prevention
C. Disaster response
D. Primary prevention
Correct Answer: D. Primary prevention
Rationale: It prevents falls before they occur.
3. A support group for breast cancer survivors that helps manage lymphedema is:
A. Primary prevention
B. Secondary prevention
C. Tertiary prevention
D. Surveillance
Correct Answer: C. Tertiary prevention
Rationale: It reduces complications of an existing condition.
4. A county has 150,000 residents. In one year, 300 new cases of chlamydia are reported. The
incidence rate per 100,000 is:
A. 300
B. 50
C. 2,000
D. 200
Correct Answer: D. 200
Rationale: ,000 x 100,000 = 200.
5. A town of 8,000 people has 160 people currently living with asthma. The prevalence is:
A. 0.2%
B. 16%
C. 2%
D. 5%
Correct Answer: C. 2%
Rationale: ,000 = 0.02.
, 6. Of 400 people with a disease, 20 died. The case fatality rate is:
A. 20%
B. 2%
C. 0.5%
D. 5%
Correct Answer: D. 5%
Rationale: = 0.05.
7. At a banquet, 80 people ate chicken and 40 became ill; 60 did not eat chicken and 6 became ill.
The attack rate among those who ate chicken is:
A. 10%
B. 40%
C. 33%
D. 50%
Correct Answer: D. 50%
Rationale: = 0.50 (versus = 10% among non-eaters).
8. Using the banquet data above, the relative risk of illness for eating chicken is:
A. 0.5
B. 5.0
C. 10
D. 4.0
Correct Answer: B. 5.0
Rationale: 0..10 = 5.
9. In a case-control study: 40 cases were exposed and 60 were not; 20 controls were exposed
and 80 were not. The odds ratio is:
A. 2.0
B. 2.67
C. 0.375
D. 1.5
Correct Answer: B. 2.67
Rationale: (40 x 80) / (60 x 20) = 3,,200, about 2.67.
10. A community has 2,500 live births and 15 infant deaths in one year. The infant mortality rate
is:
A. 6 per 1,000 live births
B. 15 per 1,000
C. 0.6 per 1,000
D. 60 per 1,000
Correct Answer: A. 6 per 1,000 live births
Rationale: ,500 x 1,000 = 6.
11. A country records 30 maternal deaths among 50,000 live births. The maternal mortality ratio
is:
A. 60 per 100,000 live births
B. 30 per 100,000
C. 6 per 100,000
D. 600 per 100,000
Correct Answer: A. 60 per 100,000 live births
Rationale: ,000 x 100,000 = 60.
