The New England Journal of Medicine
e-mail icon  FREE NEJM E-TOC    HOME   |   SUBSCRIBE   |   CURRENT ISSUE   |   PAST ISSUES   |   COLLECTIONS   |    Advanced Search
Sign in | Get NEJM's E-Mail Table of Contents — Free | Subscribe
 
Correspondence
PreviousPrevious
Volume 358:2644-2645 June 12, 2008 Number 24
NextNext

Endovascular vs. Open Repair of Abdominal Aortic Aneurysms

Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

 Sign up for free e-toc
 

This Article
-Full Text
- PDF
-PDA Full Text
-Purchase this article

Tools and Services
-Add to Personal Archive
-Add to Citation Manager
-Notify a Friend
-E-mail When Cited
-E-mail When Letters Appear

More Information
-Related Article
by Schermerhorn, M. L.
-PubMed Citation
To the Editor: Schermerhorn and colleagues (Jan. 31 issue)1 examined the relative effectiveness of endovascular versus open repair of abdominal aortic aneurysms. They used a propensity-score approach to match the open-repair and endovascular-repair groups according to demographic and clinical factors. They argued strongly that unmeasured confounding factors were unlikely to bias their results. Unfortunately, propensity scores do not eliminate bias if there are unmeasured confounders.2 The story of the pulmonary-artery catheter provides a cautionary tale. Using a propensity score, investigators found that the use of a pulmonary-artery catheter was associated with a 24% increase in the risk of death as . . . [Full Text of this Article]



HOME  |  SUBSCRIBE  |  SEARCH  |  CURRENT ISSUE  |  PAST ISSUES  |  COLLECTIONS  |  PRIVACY  |  TERMS OF USE  |  HELP  |  beta.nejm.org

Comments and questions? Please contact us.

The New England Journal of Medicine is owned, published, and copyrighted © 2009 Massachusetts Medical Society. All rights reserved.