Another alternative is to provide doctors with a simple, easy-to-use program called Dr. Bayes. The program would take as input:
the doctor’s initial estimate of the chance the patient has the disorder (taking into account whatever the doctor knows about various risk factors)
the false positive and false negative rates of a test.
The program would spit out the probability of having the disorder given positive and negative test results.
Obviously there are already tools on the internet that will implement Bayes theorem for you. But maybe it could be sold to doctors if the interface were designed specifically for them. I could see a smart person in charge of a hospital telling all the doctors at the hospital to incorporate such a program into their diagnostic procedure.
Failing this, another possibility is to solicit the relevant information from the doctor and then do the math yourself. (Being sure to get the doctor’s prior before any test results are in). Not every doctor would be cooperative...but come to think of it, refusal to give you a number is a good sign that maybe you shouldn’t trust that particular doctor anyway.
Another alternative is to provide doctors with a simple, easy-to-use program called Dr. Bayes. The program would take as input: the doctor’s initial estimate of the chance the patient has the disorder (taking into account whatever the doctor knows about various risk factors) the false positive and false negative rates of a test.
The program would spit out the probability of having the disorder given positive and negative test results.
Obviously there are already tools on the internet that will implement Bayes theorem for you. But maybe it could be sold to doctors if the interface were designed specifically for them. I could see a smart person in charge of a hospital telling all the doctors at the hospital to incorporate such a program into their diagnostic procedure.
Failing this, another possibility is to solicit the relevant information from the doctor and then do the math yourself. (Being sure to get the doctor’s prior before any test results are in). Not every doctor would be cooperative...but come to think of it, refusal to give you a number is a good sign that maybe you shouldn’t trust that particular doctor anyway.