As part of a study of the association between smoking and...

As part of a study of the association between smoking and risk of squamous cell carcinoma (SCC), a logistic regression model was estimated as logit = -4.6 + 0.6*SMOKER where SMOKER=1 for smokers and 0 for non-smokers. What is the estimated odds ratio for smokers risk of SCC versus non-smokers risk of SCC? Select one: a. 4.95 b. Indeterminate c. 1.82

The data in the following table show the results of a national study of 137,243 U.S. men that investigated the association between cigar smoking and death from cancer. Note: Current cigar smoker means "cigar smoker at time of death." $$\begin{array}{|l|c|}\hline & \text { Died from cancer } & \text { Did not die from cancer } \\ \hline \text { Never smoked cigars } & 782 & 120,747 \\\hline \text { Former cigar smoker } & 91 & 7,757 \\ \hline \text { Current cigar smoker } & 141 & 7,725 \\\hline\end{array}$$ (a) What is the probability that a randomly selected individual from the study who died from cancer was a former cigar smoker? (b) What is the probability that a randomly selected individual from the study who was a former cigar smoker died from cancer?

Probability

Conditional Probability and the General Multiplication Rule

Question

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