Nokea
What methods are commonly used for surveillance data collection?
- A. Vital registration.
- B. Randomized clinical trials.
- C. Disease notifications.
- D. Population surveys.
Correct Answer: D
Rationale: Population surveys provide valuable data on health-related behaviors and population health status.
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Vaccine that should be kept in freezer are
- A. Polio, DPT, measles
- B. Polio measles BCG
- C. BCG DPT measles
- D. BCG DPT and polio
Correct Answer: A
Rationale: Polio vaccines must be stored frozen to maintain their efficacy; other vaccines like DPT and measles require refrigeration but not freezing.
Male and female rats experimented with 4 different drugs, then which of the following study is conducted.
- A. chi square test
- B. z test
- C. t test
- D. none
Correct Answer: A
Rationale: Chi-square tests assess associations between categorical variables, useful here for analyzing drug effects across genders.
Precision stands for—
- A. Reliability
- B. accuracy
- C. consistency
- D. validity
Correct Answer: A
Rationale: Precision denotes the reliability and consistency of measurements.
When people migrate within the same country,it is called:
- A. in migration
- B. emigration
- C. outmigration
- D. immigration
Correct Answer: A
Rationale: In-migration refers to movement into a particular area within the same country.
In epidemiology, the measure of central location generally preferred for summarizing skewed data such as incubation periods is the:
- A. Mean
- B. Median
- C. Midrange
- D. Mode
Correct Answer: B
Rationale: The median is less affected by outliers and skewed data.