unit 3 questions - Unit 3 Practice Questions Epidemiology...

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Unit 3 Practice Questions Epidemiology 6000 Practice Questions 1. For each of the following examples, state whether the investigator’s conclusion is based on an ecological fallacy: a. A study finds that countries with higher salt consumption, represented by national table salt sales, tend to have higher rates of hypertension among their populations. Conclusion: higher levels of national salt consumption are associated with greater rates of hypertension among the population. b. An analysis of Chamber of Commerce registries and vital records shows that states with more farms also have more accidental work-related death. Conclusion: Working on farms is a dangerous occupation and increases risk of accidental death. c. A survey of individual households found that distance (in miles) of the household to a nearby power plant was associated with a greater prevalence of headaches among household residents. Conclusion: Living closer to the power plant increases a resident’s risk of headaches. d. A statewide study of water fluoridation and cavities found that counties that add fluoride to their water supply tend to have residents with fewer cavities. Conclusion: drinking fluoridated water reduces the risk of cavities. 2. Name the time trend appropriate to each example below: a. A small, rural New Mexico community experiences a two-week outbreak of hantavirus, a disease that rarely makes an appearance in the US. b.
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This note was uploaded on 07/15/2011 for the course PHC 6000 taught by Professor Staff during the Summer '08 term at University of South Florida - Tampa.

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unit 3 questions - Unit 3 Practice Questions Epidemiology...

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