Certified in Public Health (CPH)
Examination Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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1. Which core public health function focuses on assessing the health
status of populations?
A. Policy development
B. Assurance
C. Research
D. Assessment
Answer: D. Assessment
Rationale: Assessment involves collecting, analyzing, and disseminating
information on population health to identify community health problems.
, 2. The epidemiologic triangle consists of which three components?
A. Agent, vector, environment
B. Host, environment, time
C. Agent, host, environment
D. Host, vector, time
Answer: C. Agent, host, environment
Rationale: Disease occurrence is explained by the interaction between the
agent, the susceptible host, and the environment.
3. Which study design is best for determining disease prevalence?
A. Case-control study
B. Cohort study
C. Randomized controlled trial
D. Cross-sectional study
Answer: D. Cross-sectional study
Rationale: Cross-sectional studies measure exposure and disease at a
single point in time, making them ideal for prevalence.
4. Incidence rate is best defined as:
A. Total number of existing cases
B. Proportion of people with disease
, C. Number of new cases in a specified time period
D. Probability of death from disease
Answer: C. Number of new cases in a specified time period
Rationale: Incidence measures new occurrences of disease over time in a
population at risk.
5. Which measure compares the risk of disease between exposed and
unexposed groups?
A. Odds ratio
B. Prevalence ratio
C. Attributable risk
D. Relative risk
Answer: D. Relative risk
Rationale: Relative risk quantifies the strength of association by comparing
incidence in exposed versus unexposed groups.
6. A p-value less than 0.05 indicates:
A. Clinical significance
B. High bias
C. Statistical significance
D. Large sample size
, Answer: C. Statistical significance
Rationale: A p-value below 0.05 suggests the observed result is unlikely
due to chance alone.
7. Which ethical principle emphasizes fairness in distribution of benefits
and burdens?
A. Autonomy
B. Beneficence
C. Nonmaleficence
D. Justice
Answer: D. Justice
Rationale: Justice focuses on equity and fair treatment in public health
decisions.
8. The Belmont Report primarily addresses ethics in:
A. Environmental health
B. Health policy
C. Human subjects research
D. Clinical medicine
Answer: C. Human subjects research
Rationale: The Belmont Report outlines ethical principles for research
involving human participants.
Examination Practice Questions And
Correct Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. Which core public health function focuses on assessing the health
status of populations?
A. Policy development
B. Assurance
C. Research
D. Assessment
Answer: D. Assessment
Rationale: Assessment involves collecting, analyzing, and disseminating
information on population health to identify community health problems.
, 2. The epidemiologic triangle consists of which three components?
A. Agent, vector, environment
B. Host, environment, time
C. Agent, host, environment
D. Host, vector, time
Answer: C. Agent, host, environment
Rationale: Disease occurrence is explained by the interaction between the
agent, the susceptible host, and the environment.
3. Which study design is best for determining disease prevalence?
A. Case-control study
B. Cohort study
C. Randomized controlled trial
D. Cross-sectional study
Answer: D. Cross-sectional study
Rationale: Cross-sectional studies measure exposure and disease at a
single point in time, making them ideal for prevalence.
4. Incidence rate is best defined as:
A. Total number of existing cases
B. Proportion of people with disease
, C. Number of new cases in a specified time period
D. Probability of death from disease
Answer: C. Number of new cases in a specified time period
Rationale: Incidence measures new occurrences of disease over time in a
population at risk.
5. Which measure compares the risk of disease between exposed and
unexposed groups?
A. Odds ratio
B. Prevalence ratio
C. Attributable risk
D. Relative risk
Answer: D. Relative risk
Rationale: Relative risk quantifies the strength of association by comparing
incidence in exposed versus unexposed groups.
6. A p-value less than 0.05 indicates:
A. Clinical significance
B. High bias
C. Statistical significance
D. Large sample size
, Answer: C. Statistical significance
Rationale: A p-value below 0.05 suggests the observed result is unlikely
due to chance alone.
7. Which ethical principle emphasizes fairness in distribution of benefits
and burdens?
A. Autonomy
B. Beneficence
C. Nonmaleficence
D. Justice
Answer: D. Justice
Rationale: Justice focuses on equity and fair treatment in public health
decisions.
8. The Belmont Report primarily addresses ethics in:
A. Environmental health
B. Health policy
C. Human subjects research
D. Clinical medicine
Answer: C. Human subjects research
Rationale: The Belmont Report outlines ethical principles for research
involving human participants.
