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Is this test muddying the water?

"This means their pre-test probability was around 85%. This is higher than their post-test probability on a positive test" If this statement is true, then yes, the test in question is worthless. Stil …
David's user avatar
  • 2,665
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Percentage change

Yes. You are probably overthinking it, although there could be some subtleties Average percent change: Calculate the percent change for each individual, then average the results. This is probably wha …
David's user avatar
  • 2,665