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  3. questions table 310 ankle test results let cp represent the...

Question: questions table 310 ankle test results let cp represent the...

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Questions TABLE 3.10 Ankle Test Results Let CP represent the event that the ankle was truly fractured, and let T+ represent the event that the test said it was. From the table, estimate the positive predictive value and the negative predictive value. 1. Truth Regarding Fracture Predicted by the Ottawa Ankle Test Not Totals Fractured Not Fractured 51 56 Fractured 277 365 Totals 328 93 421 2. Which do you think a patient would be more interested in, P(T+|CP) or P(CPIT+)? Why? Have a look at the BayesRule equation again. Write out the equation for the positive predictive value. Assuming P(T+) doesnt change with prevalence, what happens to the positive predictive value as the prevalence in the population increases? Do you find that reasonable or not? Explain. 3. Do you think the Ottawa ankle rules are useful in the medical field? Why or why not? How do your analyses affect your position? 4.
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