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chubhunter [2.5K]
3 years ago
10

An investigator reviewed the medical records of 200 children seen for care at Boston Medical Center in the past year who were be

tween the ages 8 and 12 and identified 40 children with asthma. He also identified 40 children of the same ages who were free of asthma. Each child and their family were interviewed to assess whether there might be an association between certain environmental factors such as exposure to second-hand smoke. This study is an example of a:
Social Studies
1 answer:
liq [111]3 years ago
6 0

Answer:

Case-Control Study

Explanation:

A case–control study is a type of observational study in which two existing groups differing in outcome are identified and compared on the basis of some supposed causal attribute

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