What is the Negative Predictive Value?

Given a negative prediction, the Negative Predictive Value (NPV) is the performance metric that tells you the probability that the true value is negative.

• It is closely related to the Positive Predictive Value, which is completely analogous.
• The complement of the Negative Predictive Value is the False Omission Rate. Consequently, they sum up to 1.
• The Negative Predictive Value gives you the answer to the question: “If the prediction is negative, what share of my prediction is truly negative?”
• The Negative Predictive Value is calculated as follows: