Which of the following circumstances would be most likely to render a screening program unnecessary?
A) Treatment of the disease is available at low cost.
B) The disease follows a predictable course.
C) The disease is more common among older adults than among younger and middle-aged adults.
D) The symptoms of the disease appear at the same time that it is detectable by screening.
Ans: D
For a screening program to be effective, the test must be able to detect the disease in question earlier than it would be detected without screening. While cost-effectiveness is a consideration in screening programs, low treatment costs would not necessarily mean screening is undesirable. The predictability of the course of a disease is not cited as a reason to forgo screening, nor is the fact that the disease may be more common among older adults.
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