Nokea
Are health-care providers important sources of surveillance data?
- A. True.
- B. FALSE
Correct Answer: A
Rationale: Health-care providers are crucial sources of surveillance data, providing vital information needed for public health action.
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What might explain a sudden increase in disease reports in one county?
- A. An outbreak in the county.
- B. Batch reports.
- C. Duplicate reports.
- D. Increase in the county's population and laboratory error.
Correct Answer: C
Rationale: Duplicate reports inflate the apparent number of cases without reflecting true incidence.
How might changes in legislation to limit smoking in public places be considered a natural experiment?
- A. It provides real-world data on health impacts.
- B. It eliminates the need for clinical trials.
- C. It focuses solely on economic outcomes.
- D. It proves that smoking is harmless.
Correct Answer: A
Rationale: Legislative changes create natural experiments by observing health outcomes before and after implementation.
Jakarta declaration 1997 is related to:
- A. RH
- B. Health promotion
- C. PHC
- D. Population development
Correct Answer: B
Rationale: The Jakarta Declaration continued the focus on health promotion strategies.
Temperature is......scale
- A. Ordinal scale
- B. Interval scale
- C. Ratio scale
- D. Nominal scale
Correct Answer: B
Rationale: Temperature is measured on an interval scale because it has equal intervals but no true zero point.
The mean BP of a group of persons was determined and after an intervention trial the mean BP was estimated again the test to be applied to determine the significance of intervention is:
- A. Chi square test
- B. Paired test
- C. Correlation coefficient
- D. Z test
Correct Answer: B
Rationale: Paired tests evaluate changes within the same group before and after an intervention.