Submitted for Publication: April 23, 2013; final revision received August 11, 2013; accepted August 12, 2013.
Published Online: February 19, 2014. doi:10.1001/jamapsychiatry.2013.3320.
Study concept and design: All authors.
Acquisition of data: All authors.
Analysis and interpretation of data: Hatta, Wada, Takeuchi, Odawara, Usui, Nakamura.
Drafting of the manuscript: All authors.
Critical revision of the manuscript for important intellectual content: Hatta, Wada, Takeuchi, Odawara, Usui, Nakamura.
Statistical analysis: Hatta, Usui, Nakamura.
Obtained funding: Hatta.
Administrative, technical, or material support: Hatta, Kishi, Nakamura.
Study supervision: Kishi, Nakamura.
Conflict of Interest Disclosures: Dr Hatta reports receiving honoraria from Eli Lilly, Janssen, Dainippon-Sumitomo, Otsuka, Astellas, Tanabe-Mitsubishi, and Meiji and serving as a consultant for Eli Lilly and Janssen. Dr Kishi reports receiving honoraria from Jannsen, GlaxoSmithKline, Shionogi, Merck Sharp & Dohme, Otsuka, Pfizer, Mochida, Eli Lilly, and Tsumura and serving as a consultant for Meiji. Dr Wada reports receiving honoraria from Shionogi, Eisai, GlaxoSmithKline, Otsuka, Kyowahakko-Kirin, Pfizer, Tanabe-Mitsubishi, Novartis, and Meiji. Dr Takeuchi reports receiving honoraria from Otsuka, GlaxoSmithKline, Merck Sharp & Dohme, Dainippon-Sumitomo, Janssen, Eli Lilly, and Daiichi-Sankyo, and Shionogi. Dr Odawara reports receiving honoraria from Eisai, Ono, Janssen, Otsuka, Daiichi-Sankyo, Mochida, Novartis, Eli Lilly, Yoshitomi, Takeda, Shionogi, and Astellas and serving as a consultant for Otsuka, Ono, and Dainippon-Sumitomo. Dr Usui reports receiving honoraria from Shionogi and Pfizer and serving as consultant for Pfizer. Dr Nakamura reports no conflicts.
Funding/Support: This work was supported by the Japan Society for the Promotion of Science (Grant-in-Aid for Scientific Research [C] 23591728).
Role of the Sponsor: The funding source had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.
Group Information: The DELIRIA-J Group members are K. H., Y. K., K. W., T. T., T. O., C. U., H. N., Yutaka Machida, MD, PhD, Shigeo Ito, MD, PhD, Yukitaka Morita, MD, PhD, and Takashi Iwamoto, MD.
Previous Presentation: This paper was presented in part at the 11th World Congress of Biological Psychiatry; June 25, 2013; Kyoto, Japan.