Differences in Review Quality and Recommendations for Publication Between Peer Reviewers Suggested by Authors or by Editors

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Abstract
Peer review plays a central role in determining what research is published. Peer reviewers are responsible for identifying methodological flaws and for improving the quality of manuscripts. Several factors are associated with review quality (reviewer age, being a current investigator, and postgraduate training in epidemiology or statistics).1,2 Many journals give authors the opportunity to suggest reviewers for their own paper, but editors' decisions to select these reviewers vary because some are concerned that they might favor the author. However, many journals find it hard to recruit good-quality reviewers and, as such, are willing to try authors' suggestions.