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This is all the information I was given. Please help answer question 2. 2. The objective of a study is to determine the surgery mortality

This is all the information I was given. Please help answer question 2.

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2. The objective of a study is to determine the surgery mortality rate. It was speculated that age is confounder. Thus, the investigator would like to estimate the death rate by controlling for age effect. Explain how you would test to identify whether age is a confounding factor for the mortality rate of this type of surgery

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