Nokea
National vitamin A programme was initiated in
- A. 1981
- B. 1992
- C. 1993
- D. 1994
Correct Answer: A
Rationale: The National Vitamin A Programme began in 1981.
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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.
What is the primary reason for preparing and distributing surveillance summaries?
- A. Document recent epidemiologic investigations.
- B. Provide timely information on disease patterns and trends to those who need to know it.
- C. Provide reprints of MMWR articles, reports, and recommendations.
- D. Acknowledge the contributions of those who submitted case reports.
Correct Answer: B
Rationale: Summaries aim to inform relevant stakeholders quickly about emerging trends and patterns.
Describe the significance for epidemiology of the use of vital statistics.
- A. Vital statistics provide data on births and deaths.
- B. Vital statistics are irrelevant to epidemiology.
- C. Vital statistics are used only for economic analysis.
- D. Vital statistics focus solely on infectious diseases.
Correct Answer: A
Rationale: Vital statistics help track population health trends and identify outbreaks or patterns.
Selection bias interferes-
- A. internal validity
- B. external validity
- C. face validity
- D. all
Correct Answer: A
Rationale: Selection bias undermines internal validity by affecting the comparability of study groups.
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.