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. 2010 Jan 7;5(1):e8628. doi: 10.1371/journal.pone.0008628

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Bronsvoort et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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The positive (PPV) and negative predictive value (NPV) of the T. brucei s.l. specific PCR and the ITS PCR over a range of prevalence of T. brucei s.l. PPV is the positive predictive value of the test at a given prevalence i.e. how likely the animal is to have the pathogen given that it has a positive test result. NPV is the negative predictive value of the test at a given prevalence i.e. how likely is an animal not to have the pathogen given that it had a negative test result.