0
Correspondence |

Surveillance Bias and Postoperative Complication Rates—Reply

Michael J. Stamos, MD; Ninh Nguyen, MD
Arch Surg. 2012;147(2):199-200. doi:10.1001/archsurg.2011.1492.
Text Size: A A A
Published online

Extract

In reply

We appreciate the comments of Ms Rosenberg and Dr Haut regarding possible selection bias. We acknowledge that this is an inherent limitation of an analysis of any population-based database. We do not have specific data related to the number of duplex ultrasonography tests or computed tomographic scans performed for the 2 groups because this level of information is lacking in the Nationwide Inpatient Sample database; however, we believe that the discovery of deep vein thrombosis and/or a pulmonary embolism, as an incidental finding, as Ms Rosenberg and Dr Haut hypothesize, is not common enough to bias the overall findings to a significant degree. In terms of their comment that “the mean length of hospital stay was significantly longer after open surgery than after laparoscopic surgery (9.5 vs 6.5 days; P < .001), these patients may have been at higher risk of having additional diagnostic testing performed,” although we agree that this is likely a minor variance biasing our findings, it is more likely that this longer length of stay and the decreased ambulation inherent in the recovery after open surgery is in fact a major factor influencing the increased risk of venous thromboembolism.

Sign In to Access Full Content

Don't have Access?

Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more

Subscribe for full-text access to content from 1998 forward and a host of useful features

Activate your current subscription (AMA members and current subscribers)

Purchase Online Access to this article for 24 hours

First Page Preview

View Large
/>
First page PDF preview

Figures

Tables

References

Correspondence

February 1, 2012
Jessica J. Rosenberg, BS; Elliott R. Haut, MD
Arch Surg. 2012;147(2):199-200. doi:10.1001/archsurg.2011.1490.
CME
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.
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.
NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).
Submit a Comment

Multimedia

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

Sign In to Access Full Content

Related Content

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

Articles Related By Topic
Related Topics
PubMed Articles
Jobs
brightcove.createExperiences();