AKT-1967

AKT-1967

A new type of blood test is being studied that may accurately detect the presence of a certain disease in elderly patients. One hundred and fifty patients who have the disease confirmed via the gold standard, a specific medical test, are recruited, along with one hundred and fifty patients who do not have the disease. They are all subjected to the new blood test and the results are as follows:

Disease present on medical test Disease absent on medical test
Blood test positive 90 30
Blood test negative 60 120

What is the positive predictive value?