 | 1/3 |
Correct
To convert probability
to odds, use the following formula:
Odds = p/(1 - p)
In this case, (1/4)/(1-[1/4])
= 1/3
Since the case study patient's odds are 1 in 3 for having CAD,
you should be quite uncertain about whether he has a lesion in
his coronary arteries that might cause myocardial ischemia. You
might be willing to start medical treatment without being more
sure of the diagnosis. However, the patient is worried about his
risk of serious heart disease. He wants to know the truth about
himself.
You should think
of a test as a tool to move probabilities. That's all they
do. They change your level of uncertainty.
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