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Editorial
May 19, 2015

Expression of Concern: Sato et al. Effect of folate and mecobalamin on hip fractures in patients with stroke: a randomized controlled trial. JAMA. 2005;293(9):1082-1088.

Author Affiliations
  • 1Editor in Chief, JAMA
  • 2Executive Deputy Editor, JAMA
JAMA. 2015;313(19):1914. doi:10.1001/jama.2015.4722

An Expression of Concern has been published.

View Article.

Several concerns have been raised about the study conduct, integrity, and scientific validity involving an article published in JAMA by Dr Sato et al.1 After communicating these concerns to the author and evaluating his response, we have contacted administrative officials at the author’s institution and requested that they conduct an investigation to evaluate the scientific integrity of the research and the validity of the reported study results. This notice of concern is to inform readers about these possible issues related to this article. After additional information from this investigation becomes available, we will determine whether additional action is warranted.

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Article Information
Editorials represent the opinions of the authors and JAMA and not those of the American Medical Association.

Corresponding Author: Howard Bauchner, MD, JAMA, 330 N Wabash Ave, Chicago, IL 60611-5885 (howard.bauchner@jamanetwork.org).

References
1.
Sato  Y, Honda  Y, Iwamoto  J, Kanoko  T, Satoh  K.  Effect of folate and mecobalamin on hip fractures in patients with stroke: a randomized controlled trial. JAMA. 2005;293(9):1082-1088.
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