It Has Been Suggested That Occupational Exposure to Benzene in the Petroleum

question 11

Multiple Choice

It has been suggested that occupational exposure to benzene in the petroleum industry increases the risk of developing leukemia. The levels of benzene to which workers in this industry have been exposed were high from 1940 to 1970, but since 1970 have been significantly reduced.
What kind of study design, using petroleum workers, would provide the most useful information on whether benzene affects incidence rates of leukemia in this industry? (You may assume that records of individual worker assignments to jobs involving benzene exposure have been maintained by the industry.)

• A) Experimental
• B) Retrospective cohort
• C) Prospective cohort
• D) Case-control
• E) Cross-sectional

Understand the destinies of enslaved Africans transported to the Americas.

Learn about the legal and societal shifts towards a systematic practice of slavery, reflecting on laws and rebellions.

Explore individual narratives within the larger context of colonial indentured servitude and slavery.

Understand the social and political dynamics of witchcraft accusations in Salem and their broader implications for colonial society.

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Definitions:

Incentive to Cheat

The motivation or factor that encourages individuals or entities to act dishonestly or unethically for personal gain.

Cartel

An agreement among competing firms to control prices, production, and market shares, often to maximize collective profits by reducing competition.

Organization of Sellers

A collective or group of sellers or producers that aims to promote common interests, often including market and price controls.

Supply Decisions

Choices made by firms regarding the quantity of goods or services to produce and offer for sale.