We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......

A Diagnostic Model for Diagnosing Chlamydial Infection-Reply

Betty Anne Johnson, MD; Roy M. Poses, MD
JAMA. 1991;265(15):1952. doi:10.1001/jama.1991.03460150055019.
Text Size: A A A
Published online


In Reply.—  We appreciate the comments of Drs Addiss and Davis and Mr Vaughn. We contend that if the clinician is interested in selective screening, then he or she needs to be able to estimate a patient's individual probability of infection to decide whether to test. Although our model's performance is less than ideal, advantages over previous attempts at risk stratification include better discrimination and the ability to stratify patients into multiple risk groups, and reliability verified by prospective validation.We support the work of these authors in developing a selective screening program. We agree that one must know the local prevalence of disease to use the model to estimate probability and that the thresholds of risk that should guide decision making and screening policy remain unknown. Eventually the development of credible thresholds and generalizable diagnostic models may lead to both more effective and less costly screening programs.


Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?




Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.


Some tools below are only available to our subscribers or users with an online account.

0 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

Customize your page view by dragging & repositioning the boxes below.