In a study to assess the risk of obesity with the amount of time exercised per week,
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Question:
In a study to assess the risk of obesity with the amount of time exercised per week, researchers matched each patient, in a sample of 500 people who are obese, with a person of the same ethnicity, gender, and age (along with other similar characteristics) who is not obese. The researchers asked the patients and their matches a series of questions, and then tracked eating and exercise habits regularly for several years.
Which type of statistical study are the researchers conducting?
Prospective study
Case-control study
Retrospective study
Designed experiment
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