What does LR- indicate when the test is negative?

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Prepare for the Rowan Health Systems Science (HSS) 1 Test. Study with flashcards and multiple choice questions, with hints and explanations provided. Ace your exam with confidence!

Multiple Choice

What does LR- indicate when the test is negative?

Explanation:
LR- tells you how much a negative test lowers the odds of disease. When the test result is negative, you multiply the pretest odds by LR-. Since LR- is less than 1, the posttest odds—and thus the probability of disease—decrease. If LR- is particularly small, the negative result provides strong evidence against having the disease. So the correct interpretation is that a negative result offers strong evidence against disease.

LR- tells you how much a negative test lowers the odds of disease. When the test result is negative, you multiply the pretest odds by LR-. Since LR- is less than 1, the posttest odds—and thus the probability of disease—decrease. If LR- is particularly small, the negative result provides strong evidence against having the disease. So the correct interpretation is that a negative result offers strong evidence against disease.

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