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Friday FAQs on O&G
Answers to frequently asked questions provided by the Obstetrics & Gynecology editorial staff.
Friday, December 13, 2013
What Are the Levels of Evidence Published in Obstetrics & Gynecology Articles?
Randi Y. Zung, Editorial Assistant
Randi Y. Zung, Editorial Assistant
 
All Original Research manuscripts, with the exception of cost-effectiveness studies, are published with a level of evidence. The levels of evidence are defined as follows:
  • Level I: a randomized, controlled trial
  • Level II: a cohort or case-controlled study that includes a comparison group
  • Level III: an uncontrolled descriptive study including case series
The level of evidence is preliminarily assigned by the Editorial Board member reviewer during the peer review process. After a manuscript has completed the peer review process, the handling editor reviews the Editorial Board member’s initial decision and makes a final determination.
 
Authors that are asked to submit a revised manuscript are notified of the level of evidence determination in their revision letter. Authors that are submitting a revised manuscript should state if they agree or disagree with the level of evidence in their point-by-point response cover letter. Authors of manuscripts that are rejected without revision will not receive a level of evidence notification.
 
Additionally, the journal requires that all Level I and Level II studies follow the appropriate CONSORT and STROBE reporting guidelines, respectively. Authors should submit checklists and guidelines with their manuscript submissions.
About the Author

Obstetrics & Gynecology Editorial Staff
The Obstetrics & Gynecology Editorial Staff is responsible for facilitating the peer-review process, supporting the editors, and responding to queries from authors, reviewers, and readers. The current staff comprises Rebecca S. Benner (director and managing editor), Denise Shields (manuscript editor), Stephanie Casway (production editor), Randi Y. Zung (editorial assistant), and Raquel Christie (editorial assistant). To contact the editorial office, call 202-314-2317 or e-mail obgyn@greenjournal.org.

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