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The Orthopaedic Forum   |    
Level of Evidence of Presentations at American Academy of Orthopaedic Surgeons Annual Meetings
Pramod B. Voleti, MD1; Derek J. Donegan, MD1; Keith D. Baldwin, MD, MSPT, MPH1; Gwo-Chin Lee, MD1
1 Department of Orthopaedic Surgery, Hospital of the University of Pennsylvania, 3400 Spruce Street, 2 Silverstein, Philadelphia, PA 19104. E-mail address for G.-C. Lee: Gwo-Chin.Lee@uphs.upenn.edu
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Disclosure: None of the authors received payments or services, either directly or indirectly (i.e., via his or her institution), from a third party in support of any aspect of this work. None of the authors, or their institution(s), have had any financial relationship, in the thirty-six months prior to submission of this work, with any entity in the biomedical arena that could be perceived to influence or have the potential to influence what is written in this work. Also, no author has had any other relationships, or has engaged in any other activities, that could be perceived to influence or have the potential to influence what is written in this work. The complete Disclosures of Potential Conflicts of Interest submitted by authors are always provided with the online version of the article.

Copyright © 2012 by The Journal of Bone and Joint Surgery, Inc.
J Bone Joint Surg Am, 2012 Apr 18;94(8):e50 1-5. doi: 10.2106/JBJS.J.01860
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Abstract

Background: 

The American Academy of Orthopaedic Surgeons (AAOS) Annual Meeting is a major international forum for scientific exchange and education. The purpose of this study was to evaluate the level of evidence of papers and posters presented at the 2001, 2004, 2007, and 2010 AAOS meetings to determine trends in the quality of study designs between the years 2001 and 2010.

Methods: 

Abstracts for AAOS presentations from 2001 (288 papers and 468 posters), 2004 (290 papers and 466 posters), 2007 (525 papers and 541 posters), and 2010 (720 papers and 569 posters) were independently evaluated by three reviewers. The level of evidence of each presentation was determined based on the AAOS classification system. The results were subdivided according to orthopaedic subspecialty and type of presentation.

Results: 

In subsequent years, there was a substantial increase in the percentage of Level I studies (2% in 2001, 3% in 2004, 5% in 2007, and 7% in 2010), Level II studies (15% in 2001, 18% in 2004, 23% in 2007, and 29% in 2010), and Level III studies (22% in 2001, 26% in 2004, 29% in 2007, and 33% in 2010), with a concomitant decrease in the percentage of Level IV studies (62% in 2001, 54% in 2004, 43% in 2007, and 31% in 2010). Overall, there was a significant nonrandom improvement in the level of evidence of presentations over the study period (p < 0.001). This trend was consistent across all orthopaedic subspecialties and in both the paper and the poster subgroups.

Conclusions: 

The level of evidence of studies presented at the AAOS Annual Meeting is steadily increasing, which signifies a mark of continual improvement in the quality of the scientific program.

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    Accreditation Statement
    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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