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How does the 'healthy worker effect' influence the interpretation of findings from occupational health research?
- A. It tends to decrease mortality differences between workers and the general population.
- B. It tends to increase mortality differences between workers and the general population.
- C. It has no impact on mortality comparisons.
- D. It only affects morbidity rates.
Correct Answer: A
Rationale: The healthy worker effect biases comparisons because workers are generally healthier than the general population, reducing apparent mortality differences.
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Describe the 1986 incident in Chernobyl.
- A. A nuclear reactor explosion released radioactive materials.
- B. A controlled experiment involving radiation exposure.
- C. A routine maintenance operation at a power plant.
- D. A natural disaster caused by seismic activity.
Correct Answer: A
Rationale: The Chernobyl disaster involved a nuclear reactor explosion that dispersed radioactive materials across Europe.
The common characteristic that both experimental and quasi-experimental study should possess is
- A. Manipulation
- B. Control groups
- C. Randomization
- D. None
Correct Answer: A
Rationale: Both experimental and quasi-experimental studies involve manipulation of variables.
Which of the following is the best indicator of health status of a community?
- A. Birth rate
- B. Infant mortality rate
- C. Crude death rate
- D. None of the above
Correct Answer: B
Rationale: Infant Mortality Rate (IMR) is widely regarded as a sensitive indicator of the health status of a community, reflecting access to healthcare, nutrition, and living conditions.
PNMR refers to:
- A. post Neonatal mortality rate
- B. post natal mortality rate
- C. perinatal mortality rate
- D. prenatal mortality rate
Correct Answer: A
Rationale: Post-neonatal mortality rate refers to deaths occurring between 28 days and one year of age.
Suggest other examples of how epidemiology might be applied to study the causality of disease.
- A. Investigating the link between air pollution and respiratory diseases.
- B. Studying the impact of diet on cardiovascular health.
- C. Examining the relationship between smoking and lung cancer.
- D. All of the above.
Correct Answer: D
Rationale: Epidemiology can study disease causality in various contexts, including environmental exposures, lifestyle factors, and behavioral risks.