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An investigator wants to test whether exposure to secondhand smoke before 1 year of life is...

An investigator wants to test whether exposure to secondhand smoke before 1 year of life is associated with development of childhood asthma (defined as asthma diagnosed before 5 years of age). Give two possible study designs and indicate the pros and cons of each. Then, provide your recommendation for the most efficient design.

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milcah answered 6 months ago
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