Homework answers / question archive / Suppose researchers were to randomly sample individuals who were already receiving invasive or non-invasive treatment of heart procedures, and found that those receiving non-invasive treatment lived longer on average than those receiving invasive treatment

Suppose researchers were to randomly sample individuals who were already receiving invasive or non-invasive treatment of heart procedures, and found that those receiving non-invasive treatment lived longer on average than those receiving invasive treatment

Economics

Share With

Suppose researchers were to randomly sample individuals who were already receiving invasive or non-invasive treatment of heart procedures, and found that those receiving non-invasive treatment lived longer on average than those receiving invasive treatment.

Define the omitted variable basis and give an example of a possible omitted variable in this study, and discuss why this omitted variable prevents us from interpreting the results as causal.