Level of Evidence of Abstract Presentations at Brazilian Plastic Surgery Annual Meetings.

Objective: The purposes of this study were to assess trends in the level of evidence of the abstracts presented at a major Brazilian plastic surgery annual meeting, and evaluate the factors associated with a higher level of evidence. Methods: Abstracts (n = 400) presented at the 2010 to 2013 Brazilian Congresses of Plastic Surgery were analyzed for level of evidence (levels I-V). All abstracts were also classified into a higher (levels I and II) or lower (levels III, IV, and V) level of evidence. Bivariate and multivariate analyses were applied to evaluate the possible determinants (year, period, number of authors, number of subjects, plastic surgery topic, and presence of statistical analysis) of higher level of evidence. Results: The weighted average level of evidence was 3.39, with a significant (all P =6 authors/abstracts, and presence of statistical analysis to be the most significant (all P =6 authors/abstracts, and the presence of statistical analysis were determinants of higher level of evidence. (C) 2016 by Mutaz B. Habal, MD.

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