The True Positive Rate on a Mammogram

So a number of people might test positive on mammogram. How many of those, what proportion of those are going to be true positives? Yeah. What feature for that? Is that the accuracy? No. I'm not sure. So we're working out across the road. We're going to work this out by constructing our own two by two table. As he's said all morning, the true status across the top, positive first test. That is what she wants to know. The prevalence of the disease in her age group is 0.1%. So if we've got a population of 1000 women or men having a population of 100,000 people, we expect 100 will actually have

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