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Body mass index and in-hospital mortality in anorexia nervosa: data from the Japanese Diagnosis Procedure Combination Database

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Abstract

One of the main purposes of admission for anorexia nervosa is to manage acute medical conditions related to this condition. Factors associated with in-hospital mortality in anorexia nervosa remain unclear. This study describes the clinical features of anorexia nervosa patients requiring hospitalization in Japan. We analyzed the association between in-hospital mortality and body mass index upon admission using a currently available, nationwide hospital-based database. We identified 669 eligible patients with anorexia nervosa (BMI ≤ 16.5) from 229 hospitals between July and December, 2010. More than 90 % of the patients were female and 100 patients were admitted involuntarily. The average body mass index was 13.1, and the in-hospital mortality rate was 0.7 %. Five patients who died had a BMI under 11, indicating that patients with an extremely low BMI may be likely to die, despite admission.

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Acknowledgments

This study was supported by a Grant-in-Aid for Research on Policy Planning and Evaluation from the Ministry of Health, Labour and Welfare, Japan (No: H22-Policy-031), by a Grant-in-Aid for Scientific Research B (No. 22390131) from the Ministry of Education, Culture, Sports, Science and Technology, and by the Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST program) from the Council for Science and Technology Policy, Japan (No: 0301002001001).

Conflict of interest

The authors have no competing interests to declare.

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Authors and Affiliations

  1. Department of Psychiatry, Yokohama Camellia Hospital, 920 Shiranecyo, Asahiku, Yokohama, Kanagawa, 241-0003, Japan

    Mitsuhiro Nakamura

  2. Department of Mental Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan

    Mitsuhiro Nakamura

  3. Department of Health Management and Policy, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan

    Hideo Yasunaga & Hiromasa Horiguchi

  4. Department of Neuropsychiatry, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan

    Takafumi Shimada

  5. Department of Preventive Medicine and Community Health, University of Occupational and Environmental Health, Fukuoka, Japan

    Shinya Matsuda

  6. Department of Health Policy and Informatics, Tokyo Medical and Dental University Graduate School of Medicine, Tokyo, Japan

    Kiyohide Fushimi

Authors
  1. Mitsuhiro Nakamura
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  2. Hideo Yasunaga
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  3. Takafumi Shimada
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  4. Hiromasa Horiguchi
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  5. Shinya Matsuda
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  6. Kiyohide Fushimi
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Corresponding author

Correspondence to Mitsuhiro Nakamura.

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Nakamura, M., Yasunaga, H., Shimada, T. et al. Body mass index and in-hospital mortality in anorexia nervosa: data from the Japanese Diagnosis Procedure Combination Database. Eat Weight Disord 18, 437–439 (2013). https://doi.org/10.1007/s40519-013-0051-x

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  • DOI: https://doi.org/10.1007/s40519-013-0051-x

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