Nokea
Prevalence is a
- A. Ratio
- B. Rate
- C. Proportion
- D. Mode of diseases
Correct Answer: C
Rationale: Prevalence is a proportion because it measures the number of existing cases in a population at a given time out of the total population.
You may also like to solve these questions
A case report form devised for an outbreak investigation usually includes which of the following types of information?
- A. Identifying information
- B. Demographic information
- C. Clinical information
- D. Risk factor information
Correct Answer: A
Rationale: Case report forms typically collect detailed demographic, clinical, and risk factor information.
The attributable proportion for wedding cake is:
- A. 6.10%
- B. 7.70%
- C. 68.40%
- D. 83.70%
Correct Answer: C
Rationale: Attributable proportion quantifies the risk due to exposure.
Define the following terms: environmental epidemiology
- A. The study of disease patterns in populations.
- B. The study of chemical reactions in the environment.
- C. The study of genetic inheritance patterns.
- D. The study of physical activity and health.
Correct Answer: A
Rationale: Environmental epidemiology focuses on identifying and measuring exposures to environmental hazards and their health effects.
If null hypothesis is rejected even if it is true is
- A. Type I error
- B. Type II error
- C. β error
- D. µ error
Correct Answer: A
Rationale: A Type I error occurs when the null hypothesis is incorrectly rejected.
For the cruise ship scenario, how would you display the time course of the outbreak?
- A. Endemic curve
- B. Epidemic curve
- C. Seasonal trend
- D. Secular trend
Correct Answer: B
Rationale: An epidemic curve is used to show the time course of an outbreak.