Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2020 Feb 19;6(1):e001085. doi: 10.1136/rmdopen-2019-001085

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© Author(s) (or their employer(s)) 2020. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

PMC Copyright notice

Positive predictive value (PPV) of anticitrulinated peptide antibody (ACPA) testing in different at risk populations: hypothetical and reported predictive ability by incidence rates of rheumatoid arthritis (RA). The PPV of ACPAs testing increases in populations at higher a priori risk for the disease. The line displays the hypothetical PPV based on the established diagnostic properties of ACPA, with a specificity of 67% and a sensitivity of 95%.⁵⁸ The barchart displays actual PPV reported in various at risk populations with different incidence rates of RA.59 68 91 92 CSA, clinically suspect arthralgia patients; UA, undifferentiated arthritis.