Question

For the Swedish study described in Exercise 10.6, during the follow-up period 28 of 684 taking placebo died from a heart attack and 18 of 676 taking aspirin died from a heart attack.
a. Show that the relative risk for those taking placebo compared to those taking aspirin is 1.54. Interpret.
b. Software reports a 95% confidence interval of (0.86, 2.75) for the population relative risk. Interpret the lower endpoint of 0.86.
c. Explain the relevance of the confidence interval containing 1.0.


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  • CreatedSeptember 11, 2015
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