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# In a hypothetical cohort study conducted by an independent...

In a hypothetical cohort study conducted by an independent organization studying lung cancer, they found that out of 2,533 people 315 were diagnosed with lung cancer. 296 of the participants diagnosed with lung cancer smoked. Of the participants who did not have lung cancer, 1259 did not smoke. Calculate each of the following indices and provide an interpretation.

1. What is the incidence of lung cancer?
2. What is the risk ratio (RR) of smoking? How would you interpret this index?
3. What is the attributable risk (AR) of smoking? What is the interpretation of the AR?
4. What is the population attributable risk (APt)? What is the interpretation of the population attributable risk?
5. What is the attributable proportion among the exposed (APe)?

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