---
title: NPV (Negative Predictive Value)
description: "Crucial parameter of any simple screening design: the probability that someone scoring below the screening cutting point does *not*have the problem. Complement of PPV (Positive Predictive Value). See details in [screening](https://www.psyctc.org/psyctc/glossary2/screening/) and the [shiny app](https://shiny.psyctc.org/apps/Screening/) that allows you to get…"
url: "https://www.psyctc.org/psyctc/glossary2/npv-negative-predictive-value/"
updated: "2023-08-27"
category: All OM book glossary entries
---

# NPV (Negative Predictive Value)

Crucial parameter of any simple screening design: the probability that someone scoring below the screening cutting point does *not*have the problem. Complement of PPV (Positive Predictive Value). See details in [screening](https://www.psyctc.org/psyctc/glossary2/screening/) and the [shiny app](https://shiny.psyctc.org/apps/Screening/) that allows you to get the NPV and PPV for any screening measure given the sensitivity and specificity of the measure and prevalence of the problem.