Foodborne epidemiologists at the local health department investigated an outbreak of food poisoning at a Cinco...

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Biology

Foodborne epidemiologists at the local health departmentinvestigated an outbreak of food poisoning at a Cinco de Mayopotluck dinner. Initially the epidemiologists determined thatnachos were the cause of the outbreak. However, upon closer reviewlettuce was determined to be the true cause of the outbreak.
6a. In this example, would you expectlettuce to act as a positive or negative confounder on therelationship between nachos and food poisoning? Explain youranswer.
6b. Assume that you want to analyze the association betweennachos and food poisoning. Provide a method to control for theconfounder lettuce in the design of your study. Please bespecific.

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Confounding is a situation in which the effect or association between an exposure and outcome is distorted by the presence of another variable Positive confounding when the observed association is biased away from the null and negative confounding when the observed See Answer

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