---
title: PPV (Positive Predictive Value)
description: "Crucial parameter of any simple screening design: the probability that someone scoring above the screening cutting point does have the problem. Complement of NPV (Negative 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/ppv-positive-predictive-value/"
updated: "2023-08-27"
category: All OM book glossary entries
---

# PPV (Positive Predictive Value)

Crucial parameter of any simple screening design: the probability that someone scoring above the screening cutting point does have the problem. Complement of NPV (Negative 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.