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The best estimate of the association between wedding cake and illness is:
- A. 6.1
- B. 7.7
- C. 68.4
- D. 83.7
Correct Answer: B
Rationale: Calculated odds ratio reflects the strength of association.
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What do vital statistics provide important sources of data on?
- A. Morbidity.
- B. Mortality.
- C. Health-related behaviors.
- D. Injury and disability.
Correct Answer: D
Rationale: Vital statistics also track injuries and disabilities, contributing to a comprehensive health overview.
The statistical analysis of two unrelated big data (n=200) is by:
- A. A paired t-test
- B. Chi-square test
- C. Z-test
- D. Unpaired test
Correct Answer: D
Rationale: Unpaired tests compare means between two independent large samples.
UN declaration on human right occurred in:
- A. 1948
- B. 1950
- C. 1946
- D. 1952
Correct Answer: A
Rationale: The Universal Declaration of Human Rights was adopted by the UN General Assembly in 1948.
Why is the availability of a reliable and safe water source a concern to officials in the United States and the rest of the world?
- A. Waterborne diseases, scarcity issues.
- B. Abundant freshwater reserves globally.
- C. Low demand for clean water.
- D. Complete reliance on desalination.
Correct Answer: A
Rationale: Access to safe water prevents waterborne diseases and addresses growing scarcity concerns worldwide.
Denominator of prenatal mortality is
- A. Number of live births
- B. Number of deliveries (live and still births)
- C. Live births— still births
- D. Number of still births
Correct Answer: B
Rationale: Prenatal mortality includes both live and still births, making the total number of deliveries the appropriate denominator.