The NPV (Negative Predictive Value) formula is a statistical measure used to determine the probability that a person who receives a negative test result truly does not have the condition being tested for. This formula connects the concept of predictive values with the performance of diagnostic tests, helping to interpret the results in a clinical context. Understanding the NPV is crucial for evaluating the effectiveness of a screening test, as it informs healthcare providers about the likelihood of a true negative result.
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