A New Screening Test for Lyme Disease Is Developed for Use

question 7

Multiple Choice

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

• A) 99.
• B) 9.
• C) 12.
• D) 2162.
• E) 81.

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Free-Rider

An individual who benefits from resources, goods, or services without paying for the cost of the benefit.

Market Forces

The economic factors affecting the price, demand, and availability of goods and services in a free market, primarily driven by supply and demand.

Free of Charge

A situation or service where no payment is required to obtain a good or service.

Rival

In economics, a rival good is one whose consumption by one person reduces its availability for another person.