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A false-negative result occurs when a test incorrectly indicates the absence of a condition or substance. This can lead to missed diagnoses and delayed treatments.
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False-Positive: A test result that incorrectly indicates the presence of a condition or substance.
Sensitivity: The ability of a test to correctly identify those with the condition (true positive rate).
Specificity: The ability of a test to correctly identify those without the condition (true negative rate).