Predictive values

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Lost in positive space by Wanja Krah Attribution-NonCommercial-ShareAlike License

When you are looking at the results of a test, trying to make a diagnosis, you really want to know whether the positive or negative test result you are looking at, is likely to be true or not. This is where predictive values come in.

In this short Statistics Notes from the British Medical Journal, Doug Altman and Martin Bland explain predictive values.

Douglas G Altman, J Martin Bland  Statistics Notes: Diagnostic tests 2: predictive values BMJ 1994; 309:102 http://www.bmj.com/content/309/6947/102.1

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