About the Authors

Elaine M. Beller

ebeller@bond.edu.au

Affiliation Centre for Research in Evidence-Based Practice, Bond University, Gold Coast, Australia

Paul P. Glasziou

Affiliation Centre for Research in Evidence-Based Practice, Bond University, Gold Coast, Australia

Douglas G. Altman

Affiliation Centre for Statistics in Medicine, University of Oxford, Oxford, United Kingdom

Sally Hopewell

Affiliations Centre for Statistics in Medicine, University of Oxford, Oxford, United Kingdom, INSERM, Paris, France

Hilda Bastian

Affiliation National Center for Biotechnology Information, National Library of Medicine, Washington DC, United States of America

Iain Chalmers

Affiliation James Lind Initiative, Oxford, United Kingdom

Peter C. Gøtzsche

Affiliation Nordic Cochrane Centre, Copenhagen, Denmark

Toby Lasserson

Affiliation Cochrane Editorial Unit, London, United Kingdom

David Tovey

Affiliation Cochrane Editorial Unit, London, United Kingdom

for the PRISMA for Abstracts Group

Membership of the PRISMA for Abstracts Group is provided in the Acknowledgments.

Competing Interests

TL is employed by The Cochrane Collaboration. TL is an editor (unpaid) for the Cochrane Airways Group. The authors have declared that no other competing interests exist.

Author Contributions

Analyzed the data: EMB. Wrote the first draft of the manuscript: EMB. Contributed to the writing of the manuscript: EMB PPG DGA SH HB IC PCG TL DT. ICMJE criteria for authorship read and met: EMB PPG DGA SH HB IC PCG TL DT. Agree with manuscript results and conclusions: EMB PPG DGA SH HB IC PCG TL DT.