The specificity ("negativity in health") of a test is the probability that a test will produce a true negative result when used on a nondiseased population (as determined by a reference test or gold standard assessment, such as clinical outcome). For the purpose of biomarkers, this would translate to the probability or the frequency with which a particular qualitative marker, or a certain value of a quantitative marker, is not observed in the reference group of non-affected individuals. After inserting the test results into a table set up like

TABLE 1 Summary of Characteristics for Various Parameters Used in Describing Clinical Test Performance






(TP + TN)/N


Depends on

Project Management Made Easy

Project Management Made Easy

What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.

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