Jump to ContentJump to Main Navigation
Simply RationalDecision Making in the Real World$
Users without a subscription are not able to see the full content.

Gerd Gigerenzer

Print publication date: 2015

Print ISBN-13: 9780199390076

Published to Oxford Scholarship Online: April 2015

DOI: 10.1093/acprof:oso/9780199390076.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2020. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 31 March 2020

HIV Screening

HIV Screening

Helping Clinicians Make Sense of Test Results to Patients

Chapter:
(p.12) Chapter 3 HIV Screening
Source:
Simply Rational
Author(s):

Gerd Gigerenzer

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199390076.003.0003

HIV screening is now recommended by the US Preventive Services Task Force for people aged 15–65 years. However, if clinicians do not understand the actual implications of a test result, patients may suffer needless emotional harm. Most patients are not made aware of the possibility of a false positive result. And many clinicians are not aware that a positive predictive value as low as 50% is possible if testing has a specificity of 99.99% and the tested population is very low risk. With the help of natural frequencies, both clinicians and patients can better understand the likelihood of being infected given a particular result. Natural frequencies foster insight and should become part of the training of every medical student and HIV counselor.

Keywords:   HIV screening, Bayes rule, natural frequencies, doctor–patient communication

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .