Posted by **mona** on Friday, May 20, 2011 at 11:56pm.

A new screening test for a disease is developed for use in the general population. The sensitivity and specificity of the new test are 60% and 70%, respectively. Four hundred (400) people are screened at a clinic during the first year the new test is implemented. (Assume the true prevalence of the disease among clinic attendees is 10%.)Calculate the following values:

The predictive value of a positive test and The number of false positives is

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