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BMC Psychiatry
Published in: BMC Psychiatry 1/2017

Open Access 01-12-2017 | Research article

Possible factors influencing the duration of hospital stay in patients with psychiatric disorders attempting suicide by jumping

Authors: Tsubasa Omi, Hiroshi Ito, Keisen Riku, Koji Kanai, Hiromune Takada, Satoshi Fujimi, Hidenori Matsunaga, Kazutaka Ohi

Published in: BMC Psychiatry | Issue 1/2017

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Abstract

Background

Patients with psychiatric disorders have a high rate of suicide. The present study investigated factors influencing hospital stays for Japanese patients with psychiatric disorders attempting suicide by jumping.

Methods

We diagnosed all suicide attempts (n = 113) by jumping based on the International Classification of Diseases 10th Revision (ICD-10) and investigated the mean hospital stays of patients with each diagnosis based on the ICD-10 code. We then analyzed differences in the demographic and clinical characteristics between the diagnostic groups to identify factors influencing the duration of hospital stay.

Results

Patients diagnosed with schizophrenia (F2 code) were the most frequent (32.7%) of all diagnoses; therefore, we divided the diagnostic groups into schizophrenia group (n = 37) and other psychiatric diagnoses group (n = 76). The patients with schizophrenia showed a significantly longer hospital stay (125.7 ± 63.9 days) compared with the patients with other psychiatric diagnoses (83.6 ± 63.2) (β ± SE = 42.1 ± 12.7, p = 0.0013), whereas there was no difference in the jump height between the two groups (the average was the 3rd to 4th floor; p > 0.05). The number of injured parts, particularly lower-limb fractures, was significantly higher (p = 0.017) in patients with schizophrenia than in patients with other psychiatric diagnoses. The duration of psychiatric treatment in patients with schizophrenia were significantly longer (z = 3.4, p = 0.001) than in patients with other psychiatric diagnoses.

Conclusion

Our findings indicate that the number of injuries and the body parts injured in patients with schizophrenia are associated with a longer duration of hospital stay following a suicide attempt by jumping. The current use of antipsychotics and a longer duration of taking antipsychotics might contribute to the risk of bone fracture via hyperprolactinemia. Further cognitive impairment in patients with schizophrenia might prevent rehabilitation for the management of lower-limb fractures. From these results, we suggest that clinicians should monitor the level of prolactin and cognitive function in patients with schizophrenia in future studies on managing of lower-limb fractures.
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Metadata
Title
Possible factors influencing the duration of hospital stay in patients with psychiatric disorders attempting suicide by jumping
Authors
Tsubasa Omi
Hiroshi Ito
Keisen Riku
Koji Kanai
Hiromune Takada
Satoshi Fujimi
Hidenori Matsunaga
Kazutaka Ohi
Publication date
01-12-2017
Publisher
BioMed Central
Published in
BMC Psychiatry / Issue 1/2017
Electronic ISSN: 1471-244X
DOI
https://doi.org/10.1186/s12888-017-1267-5

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